Motor Neurone Disease (MND)

Possible causes of MND (including inherited forms of MND)

Most people who develop MND have no family history of the condition, and it is extremely unlikely to develop in other family members. (See below for familial or inherited MND). Little is known about what causes this form of MND. It is thought that MND is caused by a mix of genetic and environmental factors, and several possible factors have been suggested, including exposure to chemicals, fractures and injuries, smoking, military service, and engaging in some sports or high levels of exercise, but research studies have so far failed to find clear conclusive evidence. Probably lots of different factors are involved, and in any one person MND is likely to occur for complex reasons, rather than there being any single cause. Several factors may increase the risk of developing MND or may help to 'trigger' it, but may not be enough in themselves to cause it.

Some people we talked to felt there was little point worrying about what had caused their condition or whether they had done something to cause it. Lots of people asked themselves 'Why me?' but at the same time many felt it was important that people should not blame themselves. Some also pointed out that it would not make any difference to their condition even if they did know what caused it. 

Not even the experts know why people get MND. She knows there's no point worrying if she did something to cause it, but sometimes she can't help it.

Not even the experts know why people get MND. She knows there's no point worrying if she did something to cause it, but sometimes she can't help it.

Age at interview: 39
Sex: Female
Age at diagnosis: 38
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You get angry. You go through the 'why me?' stage, why not anyone else? You get angry, you get annoyed. You think to yourself, 'What have I done that's so bad?' And you're totally illogical. It doesn't, it doesn't hit anyone in particular. It's very indiscriminate the disease, like any other disease, but even though you know that it's illogical to think that way, you do think that way. You know, 'What have I done so wrong?' You go through thinking, 'Was it my lifestyle? Was it food I ate?' But there is no, there's no rhyme nor reason to it. 

And not, not even the experts know why people get MND and they think it might be environmental, they might think there's a genetic factor, but they don't know so. Again the best thing to do, well, from my, in my instance is just to push it to the back of our mind and not think about it. Grieve for the, for the bits that you want to grieve about and then push it to the back and forget about it then. As you say, when it comes to the forefront you get very upset and it's not worth upsetting yourself about. 

Other people I know with MND get very angry and it's the anger that carries them through. Other people research everything that's going on, they need to research everything that, any new medical sciences that are going on and research into MND. I don't bother doing that, I'm too lazy [laugh].

And again I think it takes up far too much of my life. My life's not long enough now to worry about that. It's to concentrate on my family and enjoy myself. And my way of getting through with, as I said some people get angry. Some people get bitter and I, I just make fun [laugh] and joke about it a lot. So that's my way of getting through with my stupid jokes [laugh].
 

He wonders if giving up smoking after 50 years had anything to do with getting MND but his consultant reassures him it's nothing he's done.

He wonders if giving up smoking after 50 years had anything to do with getting MND but his consultant reassures him it's nothing he's done.

Age at interview: 60
Sex: Male
Age at diagnosis: 59
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Have you ever had any thoughts about what might have caused it in your case?

I don't know. I can't think of any specific thing that you could ally it to. I suppose you could say giving up smoking, maybe, but I wouldn't have thought so. One thing I'm very proud of is when I was told I was dying I didn't go back to smoking. I've kept a clean sheet. And my nurse at our practice, who was my conscience when I gave up smoking - I did it through her, and the patches and things - holds me up as a glowing example. But I gave up smoking because everybody needs a reason, and my reason for giving up smoking wasn't health, or my health, it was the health of my grandchildren. And I promised my daughters that on no way I would ever smoke in front of them while they were pregnant or my grandchildren. So I gave up when I knew they were pregnant. And I haven't had a cigarette since. And that was the 3rd of September 2004. So two years.

Engraved on your memory.

Two years in now [laughs]. Well, it is, it's a big thing. I smoked forty a day and I'd smoked since I was 10 years old in reality. So, you know, fifty years of smoking pretty much. But I do feel better for it [laughs]. But, yeah, that's the only thing. No, I don't, I don't think there was, you know, I wouldn't say there was anything that I would say was the cause of it. There's nothing there. I think everybody tries to find something and invent something. And in, part of the discussions with my specialist was that, you know, 'You might think, you know, this caused it or that's caused, but we don't know, you know, we just don't know. We don't know whether it's hereditary.' Footballers predominant in motor neurone, a lot of footballers are affected by it. And yet it can affect anybody, you know. I think the nicest thing that was said was that, 'It's not something you've done. You haven't done anything to cause this.' If I'd have got cancer then I could have said, 'Yeah, well, it's my smoking, you know. I deserve it, you know. I shouldn't have smoked all them fags, thrown all that money away in smoke. I jolly well deserve it.' But you can't, because you don't know, you know. You haven't done anything to deserve it. And it's no use turning round and saying, 'God, what have I done to deserve this?' or anything else. You've got it. 

I think one of the things that is a strength to me, and has been throughout my life, is that I have had the ability to say, when I have a problem, 'Can I do something about it? Yes. Not a problem then. I can cure it. I can go out and do something positive to get rid of it or diminish it. Can I do something about it? No. Well, why worry? you know. It's not going to get me anywhere.' And I've lived my life with that belief. It's very difficult [laughs] not to worry, but I've actually lived it with that. And with motor neurone, 'Can I do something about it? Yes, I can. I can go and be part of the trials. I can do this. I can do positive things. I can raise money. You know, I have lots of skills I can use to help motor neurone disease, and, and be positive about it. Can I do anything about curing it? No.' You know.
 

Not knowing what had caused their condition was frustrating for some people. While some could live with the idea that it was just chance, others struggled with this idea, especially if they and their families had always been very fit and healthy. 

He can't understand why both he and his wife developed MND. He thought playing a lot of sport might have had something to do with it in his case.

He can't understand why both he and his wife developed MND. He thought playing a lot of sport might have had something to do with it in his case.

Age at interview: 76
Sex: Male
Age at diagnosis: 61
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Have you ever thought yourself about the causes?

I've thought a lot about the causes and I'm no further forward. I have no idea. As far as I'm aware there's no history of this in my mother's or my father's side, or in my wife's family either, and, and she had two brothers, so why should she have it and the two brothers not? I had one brother and I've got lots of cousins. My mother came from a family of ten and my father came from a family of seven and there's none of this, none of my cousins or relations have been affected, nor was my brother so why me? I don't know. I mean I've done all the sort of things that young men sort of, you know, played lots of sports, ridden motorbikes perhaps more quickly than was sensible and driven cars perhaps more quickly but it's nothing that I can lay my finger on obviously. Being a goalkeeper you've got lots of knocks and bumps and this sort of thing but that's a long time ago, so I haven't got a clue.
 

Some had done a lot of reading and searching on the internet for different theories about causes and the latest research evidence. 

He has read up on suggested causes. He worked in farming and wonders whether exposure to sheep dip affected him, or whether it's just chance.

He has read up on suggested causes. He worked in farming and wonders whether exposure to sheep dip affected him, or whether it's just chance.

Age at interview: 60
Sex: Male
Age at diagnosis: 56
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A slight worry is what causes the MND. I mean you know about the two groups of people who have MND in clusters. The first are Italian footballers, who one assumes probably from their diving have eaten too much grass which has been infected, I don't know, organophosphates. I've no idea why Italian footballers - it may be something in their diet. It doesn't seem to be their lives, so it doesn't seem to be environmental. 

The other are people in Guam, who have a really rather odd diet and they eat fruit bats as part of their diet. This seems to give them toxicity. I think it's toxicity from the fruit the fruit bats eat, which passes through the fruit bats and gets concentrated. And they have about a 200 per cent chance of getting motor neurone disease greater than average. But apart from that, it doesn't seem to be related to race, it doesn't seem to be related to sex, it doesn't seem to be related to whereabouts in the world you live, to diet. I mean, Japanese people who eat fish and rice are just as likely to get it as people in Europe who eat a meat diet or South Americans or whatever. It just seems to be totally - apart from these two clusters. The only other possible cluster, in [county] we don't have many people who work in forestry and farming, but maybe people who worked in forestry and farming or gardening have a higher possibility, which gives you the horrible thought that it might be organophosphates. And I happened, I used as a kid to work on a couple of farms and I've done sheep dipping and things like that in my past. And you wonder whether some days when I was 20, in my 20s, dipping sheep without gloves and without proper protection, as we did in those days, may just have caused it. I don't know. I can't think of anything, but it's the only possibility that sort of sets me apart from ordinary people. I've had a normal diet apart from that - not wonderfully healthy but quite good these days. I don't seem to have done anything else. So it's perhaps my days of working with cattle and sheep, on hill sheep farms, hill cattle farms. I can't think of anything else. Maybe just statistical. I'm the one they choose. Two hundredth thousandth person or something.

Footnote

The reasons why people in Guam have a high rate of MND are still unclear. A recent paper at the International MND Symposium has presented some evidence that the main risk factor may be toxins in flour made from cycad fruit, rather than consumption of fruit bats, but that a genetic factor may also be important in triggering MND. A summary is available at'

www.mndassociation.org/research

Research suggests there is a higher risk of developing MND amongst footballers and farmworkers, but the reason why is still unclear. The MND Association provides a series of questions and answers at'

www.mndassociation.org/research
 

People mentioned a wide variety of what they thought might be possible risk factors from their own experience, including:

  • A stressful lifestyle or particularly stressful events
  • Diet
  • Exposure to chemicals (especially in agricultural work and on food, but also when working as a firefighter and installing industrial machinery)
  • Exercise, sport and sports injuries
  • Other injury (including head injuries and leg injuries)
  • Previous chemotherapy and surgery
  • Medication for depression
  • Amalgam teeth fillings
  • Throat infections, viruses
  • Lyme disease
  • Genetics
  • Frequent travelling (including muscle cramps caused by sitting still for long periods).

She has thought of many things which might have caused her MND including injury, stress, dental fillings and crop-spraying near her house. [Voice software interview].

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She has thought of many things which might have caused her MND including injury, stress, dental fillings and crop-spraying near her house. [Voice software interview].

Age at interview: 63
Sex: Female
Age at diagnosis: 62
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I thought back over the previous few months for an explanation - could I have trapped a nerve in an attempt to do the exercise that was expected of me? The car hatchback lid dropped on my head 2 weeks previously - did this cause a trauma to my skull? I was suffering a certain amount of stress, in that I was main carer for my difficult mother-in-law - could this be part of the problem? My mother died in her 50s with cancer of the throat and for 4 years she could not speak. This is an uncanny connection. That was another fear for me - could this be predisposition to cancer?

In the previous year I had a vile reaction in my throat when the farmer was crop spraying opposite our house - could this be connected? Crop spraying had been going on for 30 years, but this was the only time I felt the reaction directly in my throat. My mouth remained sore after the spraying incident and it left me with sensitivity to strong smells, tastes, certain fruits, perfumes, some plants, chemicals, etcetera. I couldn't identify changes to any other parts of my body, simply the mouth and throat area. However, it suddenly opened my eyes to possible damage to our family's health; my husband suffered from neck and head aches for as long as I can remember and my twin daughters also have unusually sensitive muscles. Now, looking back, perhaps growing vegetables in our allotment alongside the treated field might well have put us all at risk.

I had face pain a few years ago connected with over-large fillings. When one was ground off a little after my protestations, the face pain disappeared. Was this a TMJ [temporo-mandibular joint] problem? Was the amalgam in my teeth leeching into my system? In 1999 I caught a virus and was unwell for one year and was advised to stop physical work and change my life style. Now, looking back, I believe I had ME [myalgic encephalopathy or chronic fatigue syndrome] - can this be a pre-cursor to motor neurone disease? In the light of my new problem, I went back to my dentist for his advice and he was certain that it was neurological rather than physical, even though he had to admit I had unusual face and neck aches over the years.

They wonder if exposure to chemicals in farming or Mike's days as a firefighter might have caused MND, including during the foot and mouth outbreak. [Mike is unable to speak].

They wonder if exposure to chemicals in farming or Mike's days as a firefighter might have caused MND, including during the foot and mouth outbreak. [Mike is unable to speak].

Age at interview: 54
Sex: Male
Age at diagnosis: 52
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Interviewer has asked what Mike thinks might have caused his MND

Chemicals. Mike's been in the fire service since he was 16 years old and he worked in one of the biggest brigades in the, in the country, where lots and lots of chemical incidents and stuff that went on. And of course they went through them. And at the time that he was in the brigade there wasn't the sort of protection, protective equipment and clothing and stuff that there is today. You know, we're talking way back to 19-, was it 60s, when you first started? [Mike writing on whiteboard] And as time's gone on he's had more and more chemical incidents. And so that's been, some research that we read, there's been some evidence that chemical - 1970, was it? - some chemical, chemicals it's been suggested might have been involved. The other thing that - and this is more from my end - is that when Mike was in [county] he was in charge of the foot-and-mouth problem that they had in 2001. You were in charge of the health and safety side of it, weren't you? And of course being involved with that he was on farms with affected animals. And, and that was an, a horrendous nightmare. And we lived there. It was shocking. And he was very heavily involved in that. And we lived on a farm, and there's been some suggestion from Australia that, there's been, there's high evidence of people who've lived on, live on farms have got MND. So we had double that, if you think about it. The chemicals from the fires, the living on a farm for, for four years, was it? About four years, and then the foot-and-mouth as well. That cocktail of stuff going on, we can't help but think that maybe there's some trigger that's occurred as a result of those, those things. [Mike writing on whiteboard]. But of course they don't know, do they? They don't know. But I can't get the, the foot-and-mouth thing out of my head. Because it was, people who weren't there won't realise how bad it was. It was shocking, absolutely shocking. You didn't go to the farms? On our farm, though, we had to dip our feet in the [laughs], every time you went up the lane you had to get out the car and dip your feet in the disinfectant. And so I don't know, it just seems strange. And of course there's, there's been some suggestion that, some MND patients are saying that, they're questioning whether they've got Lyme's Disease or MND. And there may be some misdiagnosis. [Mike writing on whiteboard]. And they say that Lyme's Disease apparently is caused by tics, is it?, in, from foreign travel. 

And of course Mike's worked in Botswana, he's worked in Sri Lanka, he's worked in America. So that's a, another thing. But we asked the neurologist about Lyme's Disease two weeks ago and he said, 'No. Some of the symptoms are not the same.'

He has thought about lots of possible causes. He has spent time near laundry chemicals, but not as much time as the laundry workers themselves.

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He has thought about lots of possible causes. He has spent time near laundry chemicals, but not as much time as the laundry workers themselves.

Age at interview: 55
Sex: Male
Age at diagnosis: 55
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Do you have any thoughts for yourself about what might have caused it?

What might cause? Tick bites? Stress? All are possible, all together. And some extra bacterias as well, or virus. Nobody knows what cause this thing. Immune system auto-aggression?

Have you ever been exposed to chemicals, in your work for instance?

As normal. I got some mercury fillings, which I noticed a few days ago. I think I have to remove them. That's all. But a lot of people got them, not only me. And a lot of people, they were exposed to chemicals. For example I used to do work for those laundries. They got chemicals, soap powders. And you cannot imagine what sort of powder is it. It burns the skin. Yes, but I never, you know, the washermen got more contact with it, a lot of people got more. I never touch these clothes there, I just deal with the machinery. Yeah, they got much more contact than me.

He believes Lyme Disease may trigger MND, and sometimes may be mistaken for MND, but British doctors are much less aware of Lyme Disease than doctors in other countries.

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He believes Lyme Disease may trigger MND, and sometimes may be mistaken for MND, but British doctors are much less aware of Lyme Disease than doctors in other countries.

Age at interview: 56
Sex: Male
Age at diagnosis: 53
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In April 2005, as suggested by a friend of ours, we went to see a doctor in a clinic in Germany, in Hanover, Germany. This doctor was claimed to be able to help cure or at least improve the condition of people with neurological illnesses like mine. We went over there, and they did blood tests on me to find out what if anything was in the blood that might be causing this. Surprisingly it came back positive for Lyme Disease or Borrelium, a tick-borne disease which amongst its many symptoms can cause paralysis. Now obviously one can say that this is all nonsense and that he was just trying to get money out of us because it was a private clinic that we went to, but many independent people we met claimed to have had the same symptoms which greatly improved after treatment with a strong, especially prepared antibiotic. Since then we have found a number of websites which refer to a possible link in some cases between Lyme Disease and certain neurological conditions. Furthermore I've been an avid walker in woods and fields. I love nature. I've often crawled into places you probably wouldn't imagine going into, looking for mushrooms in the autumn amongst other things. It is an unfortunate fact that ticks are becoming more common in this country, probably due to climate change, and some of the ticks have parasites that can cause some rather nasty illnesses including Lyme Disease. The doctor prescribed antibiotics for the Borrelium or Lyme Disease, and other medicines which supposedly act positively on the neurological condition from which I was suffering. At that time I didn't know until I spoke to other sufferers and went into websites dealing with Lyme Disease that it can cause paralysis if left untreated. In the beginning a range of different symptoms, a feeling of influenza, rashes on the body, swollen glands, etc, may occur which may or may not come out at the same time. 

Lyme Disease sufferers can feel generally ill, but unless they can pinpoint where and when they were bitten they have no way of really knowing that they've been infected. Giving busy lifestyles they may not give their medical problem much thought until it becomes much worse, and by then it may be too late to tackle easily. Now as far as I was concerned I didn't know that it might cause paralysis.

Apparently lots of people get it on the Continent. Here it's less known because the spread of ticks is rather slower and less common, although they're beginning to be widespread in the south of England. We therefore had hope that perhaps it was something to do with that, yet in this country we were met with disbelief by the medical establishment. The idea that I might have Lyme Disease was dismissed by the medical profession in this country almost out of hand. 

Given what we had heard and what I had read in various websites concerning symptoms of Lyme Disease, this caused us to wonder whether my condition may have been brought on or made worse by an infected tick. I've had three bouts of pneumonia in recent years and had all sorts of colds that I couldn't get rid of. Amongst symptoms I did experience a lot of itching and swollen glands under the armpits. I also had frequent redness and discharge behind the ears and in my navel. I was told by my nurse, however, that it could be simply caused by the fact that I was ill. Many of the symptoms remain and many parts of my body are affected by itching. I gathered from various websites that these effects can also be caused by Lyme Disease. After I took three sets of antibiotics, which were given by injection, according to further tests done in Germany my Lyme Disease appeared to be on the way out. We therefore didn't go back to Germany again, especially as it was expensive,

And besides, the doctors were pooh-poohing it in this country and so on.

So I mention Lyme disease as a possible cause, and as a warning for doctors in this country not to be complacent.  It is not to say that Lyme disease causes motor neurone disease or MS or anything else per se. But there have been cases, documented cases, of people who got Lyme disease  and whose symptoms mirrored that of a variety of neurological conditions including MND, Parkinson’s and MS. And this needs to be investigated and not pooh-poohed.

Some people thought there was evidence of a cluster of cases where they lived, including a woman who knew of three people with the condition using the same hairdresser. 

She wonders if hairdressing products might have caused a cluster locally, but it seems unlikely. She also wonders about the effects of stress and pesticides on fruit.

She wonders if hairdressing products might have caused a cluster locally, but it seems unlikely. She also wonders about the effects of stress and pesticides on fruit.

Age at interview: 66
Sex: Female
Age at diagnosis: 65
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Do you have any thoughts yourself about what's caused it, or what has caused it locally with these other people that you know?

I don't know. Well, I know there's four ladies and a man in this area. But there's another cluster in another village nearby. At first you think - I mean three of us going to the same hairdressers, you think, 'I wonder' - and we all tint our hair [laughs]. Because you don't want to be grey, do you? [momentary microphone interference] And you think, 'I wonder what was in the tint?' But then hundreds of people would be like it. So you think, 'Well, it can't be that.' You think about the stress, because stress does a lot to you, doesn't it? And I was very stressed the year before I got it, for different reasons. And you think, 'Maybe you've just reduced your immune system from being stressed.' I don't know. 

And then you think about what you eat. And in the February before I was diagnosed I was a couple of stones heavier than I am now, and I was borderline diabetic. And I thought, 'I've got to do something about this.' Because it comes to people who are overweight, doesn't it? So I went on a diet. And I had, the only - I had a sweet tooth at the time, I don't have one any more - and the only way I coped with it was having a big bowl with raspberries, blackberries, blueberries, strawberries, all the berries on, and I had them on the table. So whenever I felt like something sweet I had some of this fruit. So that was from the February. And then when I was diagnosed I thought, 'All this fruit I've been eating, it's all out of season, it's come from Chile, all over the world. How did it get onto my table in pristine condition, not a bug in sight?' And you think, 'It must be full of chemicals.' So now I buy organic as much as I can. Because you think, 'It's not normal to have raspberries in February, is it?' And they're all, I mean you don't have to look in them for bugs, do you? Whereas when I was little they were all full of little creepy-crawlies, weren't they? So you think, 'All these pesticides and--' So I might have done it really to myself, I don't know.
 

As several people commented, understanding the causes could help in finding a cure, and some were frustrated by what they saw as the lack of progress in research. 

Searching for a cause helps people cope with MND, but it can become an obsession. She would like to see more research into the effects of crop-spraying. [Voice software interview].

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Searching for a cause helps people cope with MND, but it can become an obsession. She would like to see more research into the effects of crop-spraying. [Voice software interview].

Age at interview: 63
Sex: Female
Age at diagnosis: 62
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Many of us newly diagnosed patients search our memories for any clues as to what could have caused this neurological problem, such as genetics, lifestyle, environment, diet, harmful chemicals. Reading the website called 'Patients Like Me' it strikes me that MND patients never stop hoping for a cure and it's this that keeps them positive and able to cope with their worsening condition. We search for a cause from day one when our odd symptoms occur. Many people who suffer loss of limb function first of all focus on MS, ME, CFS etcetera, because these are the well-known disorders. This searching occupies their minds full-time and can become an obsession. Once diagnosed with MND (and probably this is the case with other neurological diseases as well) they continue the rest of their life searching for answers. Could old symptoms be a precursor to the disease, etcetera? In many cases they continue to wonder if they have been misdiagnosed. 

I want to see more public awareness of this disease, which is by no means a minority illness if, as I am told, seven in 100,000 at any one time have it, or whilst people are at work today, three new patients will be diagnosed. We need the media to focus on it as they did with cancer to remove the misconceptions and to forge ahead with more research. I would like to see more attention paid to the iniquitous use of chemicals in our daily life - they are a hazard to our health and we are only just beginning to see what damage they can do. More research is needed urgently. The Agro-industry and the Government are shutting their eyes to a link between crop spraying and illnesses and they simply declare there is no evidence. But how do we know there is no evidence if there is no research into the effects of chemicals on our health? There are health and safety regulations to protect farm workers, but no means of protecting the public who live alongside the areas of spraying. The spray chemicals are designed to kill the insect's neurons. Chemicals used in the farming industry surely progress through the food chain from crops to livestock to milk and meat etcetera. This is one aspect of the environmental issue that does not seem to be of concern to politicians, but is a growing concern to the public.

More funding and more research are needed for MND. He believes all new patients should be routinely asked questions about their lifestyle, to help identify causes or triggers.

More funding and more research are needed for MND. He believes all new patients should be routinely asked questions about their lifestyle, to help identify causes or triggers.

Age at interview: 56
Sex: Male
Age at diagnosis: 53
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Edited text prepared by Peter

My experience of doctors dealing with neurological conditions is that they appear helpless to say the least in terms of giving any help to people who have neurological conditions, and certainly as relates to MND. To repeat myself, doing nothing is not an option [since the only way that patients can be helped to live longer and still have fulfilling lives is to give them some hope, however slender, and something useful to do]. Patients who have been diagnosed with such debilitating illnesses require active support from the medical profession, not only in terms of being diagnosed, but in terms of advice and help that can be given.  Judging by what I've heard and spoken to with various people in various organisations, it would appear that the idea of stem cell research and other like matters is not being actively pursued, again possibly due to lack of funding. There appears to be no attempt to collate experiences, symptoms and circumstances from each patient in order to find a common denominator which could indicate a possible cause for their illness. The members of the medical profession dealing with neurological disorders that I've come in touch with appear not the least interested in pursuing that kind of line of enquiry. That line of enquiry seems to me the most logical in perhaps advancing the better understanding and thereby later on better treatment of these neurological conditions.
 

Information about how to get involved in research can be found at on the MND Association's website

Researchers from around the world are working to find the answers to what causes MND. Although there is still a great deal of work ahead to find out what environmental and lifestyle factors can trigger the disease, researchers have and continue to learn a lot about what can cause the disease on a cellular level. So far, researchers have identified that a faulty transport system of substances, clumping of faulty proteins in the neurone and many other factors may play a role in the development of the disease.

Learning more about the cellular causes of MND is essential to allow the development of treatments. More information on possible cellular causes can be found on the MND Association's website.

Familial or inherited MND

In 5-10% of cases MND runs in families; the gene that is faulty in familial MND can differ from one affected family to another. 

The age at which symptoms first appear, type of onset and speed of progression can vary as much from person to person in familial MND as they can in sporadic MND. For some people, their own diagnosis may be the first time anyone has suspected a family connection, and it may not be immediately obvious if they have different symptoms. (See Interview 34 - Ken's story). A woman diagnosed in her thirties had known for some years she was at risk but assumed that if she did get MND it would be later in life, like her father and uncle. 

She had already met her future husband at university before her father died of MND. They assumed it was unlikely to affect her until she was much older.

She had already met her future husband at university before her father died of MND. They assumed it was unlikely to affect her until she was much older.

Age at interview: 34
Sex: Female
Age at diagnosis: 31
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I, my husband, husband and I met at university, when we were 18, in our first week at university. He was very convenient. He was in the dorm opposite me in halls. So we were together through the whole of university, and so we'd been together for three, four years probably when Dad died, which has been a huge help actually now going through all this. I don't know why. I think it's because it, it helps set the scene a bit for [husband]. And I think before we got married he, he knew the - [tearful] he knew the deal as well.

I can't, I don't really have a memory of any specific discussions, although, ...because it was matter of fact. You know, he knew that, we knew that, you know, my uncle had died and my father had died, and also their mother, actually. Looking back at the records now, although they diagnosed it as maybe a stroke or, you know, something like that, that was back then, but actually looking at it now it's likely that she had it as well. But they can't go back any further because she, they think that she was adopted. So that's where the family history ends. So I don't remember any specific discussions. But obviously [husband] knew as well as I did. Because it probably wasn't really clear until Dad died what the implications were for us. And I think we felt that it's something that affects older people.
 

Some people we talked to, who had younger children, worried especially about whether their MND might be an inherited form. Knowing that MND runs in the family raises particular issues for people about whether they themselves will get the condition, and whether their children and other family members will also get the condition. Gene testing is not always possible, if there is no clear family history.

So far her children have decided not to be tested for the SOD-1 gene mutation. At the moment neither of them wants children.

So far her children have decided not to be tested for the SOD-1 gene mutation. At the moment neither of them wants children.

Age at interview: 45
Sex: Female
Age at diagnosis: 37
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Have, have you talked to them about how they feel about testing?

I have. At the moment they don't want to know. They just want to get on with their life. Neither of them at the moment want children, for obvious reasons. When my son was 16, he actually asked me if a doctor would consider giving him a vasectomy. Which he's, we've never really looked into that, other than that first conversation, because I think that's a bit drastic.

I suppose that might be the point at which they would actually want to have a test. If they had a partner and'

Yes.

'they wanted to have children after all, then they might.

Well, it's something that I've got no control over. It's actually their, their decision, their choice. And I really don't think, although I could cope, if I found out that I'd passed it on to one or both of them I couldn't cope with that information myself. And one of the things I do know is that if one of them was to develop it, often the one that is okay has loads of trouble dealing with the news that they're going to lose a brother or sister. So it's, it's like a ripple effect. Nothing's as straightforward. Because my neurologist was just talking about maybe giving riluzole to people with the genetic form in the hope that it might correct or prevent it on the on-start. But in order to do that they have to have a genetic test. So it's a doubled-edged sword whether they really want to know - if so, they might be. There's a lot of issues really around genetic testing. But I do know that if they decided to have a family later on, we do have the technology to screen the embryos and take the SOD-1 mutation out, which would technically prevent them from having any more children with that, but then again, in order to do that they would then have to find out if they were carrying the genes, or they would know they were carrying the gene if one of the embryos was faulty, so.

Mmm, yes, it raises huge issues.

It is. It's a massive - I remember my neurologist saying to me that until I'd openly talked about it, he was just coming at it from a medical point of view' 'Oh, well, it's better if they know because then if any treatments come out we can give them' and this. But he hadn't actually realised the huge knock-on effect it has on their life, on mortgages, and...

Have they had counselling separately about?

Not at the moment, no. And they can't, you can't do anything about genetic counselling, really, till they're 18. I did set up a link with a counsellor when they were about 12 in the early days, in the hope that if they ever wanted to talk there was someone there. But so far they haven't taken me up on that.
 

She might not have had children if she'd known she had familial MND, but she's glad she has them. She wants them to have positive memories of her life with MND.

She might not have had children if she'd known she had familial MND, but she's glad she has them. She wants them to have positive memories of her life with MND.

Age at interview: 45
Sex: Female
Age at diagnosis: 37
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But I'm also aware that I've got to be as positive as I can, because I want the children to have positive memories of MND, not the negative one that I had originally. Because God forbid if one day one of them develops it, I don't want them to then think, 'My life's over.' I want them to remember that I've abseiled off a building with MND, I've met Cliff Richard with MND. I've done a lot of things that I would never have done previously. I've done the Great North Run. And I've tried to let - and we have a laugh. I try and - it's the most important thing that life goes on, it's not the end of the world, and try and give them as positive an outlook as I can. But one of the hardest questions I've ever been asked, [son] was 11 and he just point blank sat - I was in the car, we were parked up - and he said, 'Did you know when you had me that you were going to give me something that I was going to die of?' And I remember sitting there just frozen, thinking, 'How on earth do I answer this question?' And I honestly said, '[son], I didn't know.' And thankfully I didn't know. At the time that I had my, I had my children I didn't know for definite that it was. But I wouldn't have not had them. And I had to explain to him that it didn't make any difference, and hopefully he won't have to develop MND, and one day the cure will - hopefully in their lifetime - I don't think it's going to happen in mine but I've got every faith that, for them, that things will be different. And that's the one thing that I can keep telling them.

So would you, I think you said you, you would have had children anyway, even if you had known there was a family.

No. I think had I known, I would have chose not to have children. But then that's an easy assumption to make when you've already got them. So, and I wouldn't be without them now. They keep me going. They're a reason to be here. So I've got a lot to be thankful for. But I really don't think I would have gone ahead had I known for definite that this was going to happen.

So you and your sister, have you got other brothers and sisters?

I've got another sister, who so - is fine. 

And were you all, you and your uncles and mother, were you all much the same age when it was diagnosed?

Pretty much. My mum was 37 when she died. Her brother was only 28 when he was diagnosed. Her other brother was the exception. He was 50 when he was diagnosed. My sister was 39 when she was diagnosed. I was 37. And yet my cousin in Tasmania was like her father. She was 50 this year, so she's the same age as her father was when he was diagnosed. Yet we seem to be around the same age as our mother. And our grandfather - and I was saying he probably did have motor neurone disease - he died when he was 42. So it seems, seems to be a connection with age.
 

Her father did not have a known mutation so she did not have genetic testing. She had already been diagnosed before she and her husband would have thought about having children.

Her father did not have a known mutation so she did not have genetic testing. She had already been diagnosed before she and her husband would have thought about having children.

Age at interview: 34
Sex: Female
Age at diagnosis: 31
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And did, did any of you ever have any genetic testing?

No. We, I know my sisters and my cousins did talk about it, and at the time there wasn't really any testing available. We, I think they were just starting to develop it and they'd found there was some testing available for the SOD-1 gene. But we, I think they tested my father's blood and found that it didn't have the SOD-1 gene mutation. So we felt that, you know, there was no point. But before that I think my sisters and I had decided that there wasn't any point anyway.

It wasn't really going to be of any help to us because it wasn't, it wasn't going to change any decisions we made or the way that we led our life. It wasn't, the testing isn't conclusive enough. You know, that, we were told that, “Even if you are found to have the SOD-1 mutation, then you may well not go on to develop it.” So we didn't find that it was very helpful. And it wasn't an option to us anyway in the end.

When you say it wouldn't affect any, any decisions that any of you made, is that also true about having children?

I think… well, [husband] and I did go and see - oh - my husband and I did go and see a doctor that specialised in genetics and he - just to talk about this issue when I was first diagnosed. And we felt that the, if we had the test, it wasn't going to give us enough conclusive evidence. And also for us, having children when I'd already been diagnosed was going to be too much of a bigger strain. I think for my sisters, we - I don't think it would have affected their decision. I think - although now, in hindsight now that I've been, been diagnosed, I don't know. We haven't really talked on that level. Although I know that within the family we're all very keen to kind of stamp out the gene. And if testing is going to allow - the research into testing is, will hopefully allow decisions to be made in the future that will really help stamp out the genes, mutations, or you know - and embryonic testing and that sort of stuff.

For more on Familial or inherited MND see our section on Inherited motor neurone disease (MND)

See our resources page for links to further information on research around causes of MND. You can also find out more on research on the MND Association's website.

Last reviewed August 2017.
Last updated August 2017.

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