Typically, the longer you live, the more likely you are to develop the condition. If you have a parent with MND with no other family history of the disease, you're at a slight increased risk of MND of about 1.4%. The risk to the general population of MND is about 0.3%.
Motor neurone disease is an uncommon condition that mainly affects people in their 60s and 70s, but it can affect adults of all ages. It's caused by a problem with cells in the brain and nerves called motor neurones. These cells gradually stop working over time. It's not known why this happens.
MND is not a common disease. It affects adults and sometimes younger adults. You are likely to be more than 40 years old at diagnosis, and most people with MND are aged between 50 and 70. Men are affected almost twice as often as women, but this varies.
In 1 out of 4 cases, the first MND symptoms will affect the muscles used for speaking and swallowing. These problems might initially affect the muscles used for speech and swallowing. Increasingly slurred speech (dysarthria) is usually the first sign of this type of MND. It might be misdiagnosed as a stroke.
Many of the people we talked to had been experiencing symptoms for months or even years before finally getting a diagnosis. Some lived with their symptoms for a long time before deciding to go to their GP, perhaps putting them down to stress, old age, or injury. (See 'First symptoms of MND').
While low levels of exercise were associated with a protective effect, more aggressive exercise was associated with increased risk. However, of these findings, only high cholesterol emerged as a clear modifiable factor that could be targeted to reduce risk of MND.
NZ has highest rate of motor neurone disease of any country in the world | 1 News Now – NZ MND Research Network.
We each have two copies of every gene. Those carrying a fault in a gene leading to MND have a 50 percent (one in two) chance of passing the genetic error on to their children. However, the risk of someone carrying the faulty gene actually developing MND may be lower than 50 percent in some cases.
This study confirms that in some people, frequent strenuous exercise leads to an increase in the risk of MND. “It is important to stress that we know that most people who undertake vigorous exercise do not develop MND. Sport has a large number of health benefits and most sportsmen and women do not develop MND.
The different types of MND cause similar symptoms and have three stages: early, middle, and advanced. The diseases progress at different speeds and vary in severity.
Genetic testing is only available to those over the age of 18 and the result has huge implications. You may find that you do not carry the faulty gene and the threat of disease will no longer hang over you. However, it is equally possible that you find out that you do carry an MND-causing gene.
What is the life expectancy of someone with motor neurone disease? A person with MND will usually die between two to three years after diagnosis, but this can vary from person to person. Some people live many years after their diagnosis.
MND is uncommon but not rare. Recent statistics estimate there are over 2,000 people in Australia currently diagnosed with MND and every day 2 Australians are diagnosed with MND. The average age of onset is 50.
Researchers have hypothesized that vigorous physical activity might increase exposure to environmental toxins, facilitate the transport of toxins to the brain, increase the absorption of toxins, or increase the athlete''''s susceptibility to motor neuron disease through added physical stress.
There is no known cure and more than half die within two years of diagnosis. The research found that the damage to nerve cells caused by MND could be repaired by improving the energy levels in mitochondria - the power supply to the motor neurons.
Inherited MND affects up to 1 in 10 people with MND and means they probably have a family history of the disease. Where this is the case, it is impossible to predict when or if a family history means MND will happen. Other triggers may still be needed for the disease to begin.
B Vitamins (Folic Acid, B6, B12)
Individuals with MND have elevated levels of homocysteine, which is involved in the formation of free radicals and oxidative stress. Folic acid and vitamin B12 convert homocysteine into methionine, while vitamin B6 converts it into sulfur amino acids, reducing homocysteine levels.
In the lower limbs early symptoms include foot drop, a sensation of heaviness of one or both legs, or a tendency to trip. Patients may also notice difficulty in rising from low chairs and climbing stairs or excessive fatigue when walking.
However, blood tests might be performed to look for evidence of damage to the muscle (called CK, or creatine kinase), to look for causes of inflammation in the spinal cord (such as vitamin B12 levels) or to look for supportive evidence of damage to the motor nerves (such as anti-ganglioside antibodies).
Living With a Motor Neuron Disease
Some are milder and progress more slowly than others. Although there is no cure for motor neuron diseases, medicines and therapy can ease symptoms and improve your quality of life.
MNDs, such as PLS or Kennedy's disease, are usually not fatal and progress slowly. People with SMA type III may be stable for long periods. Some forms of MND, such as the severe form of SMA and ALS, are fatal.