A new study suggests that, people who are genetically prone to low Vitamin-D levels are at increased risk of Multiple Sclerosis.
Based upon the DNA profiles of tens of thousands of people of European descent, the findings suggest and gain weight to the theory that the sunshine vitamin plays a role in MS.
Scientists are already testing whether giving people extra vitamin D might prevent or ease MS. Experts say the jury is still out.
If you think you may not be getting sufficient Vitamin D from sunlight or from your diet, you should discuss this with your doctor.
- Is important for healthy bones
- We make it in our skin when we are exposed to sunlight, but some of it comes from our diet
- Good food sources include oily fish, eggs, fortified breakfast cereals and fortified fat spreads
- Some people – the elderly, pregnant and breastfeeding women, babies, children under the age of five, and those of Afro-Caribbean, Asian and African decent as well as those who do not get much sun – may not get enough and need supplements
Research around the world already shows MS is more common in less sunny countries, further from the equator.
But it is not clear if this relationship is causal – other factors might be at play.
To better understand the association, investigators at McGill University in Canada compared the prevalence of MS in a large group of Europeans with and without a genetic predisposition to low Vitamin D. This type of genetic variation is pretty random and so the assumption is that any link found should be trusted. The findings, published in the journal PLoS Medicine, indicated people with lower blood levels of a marker of Vitamin D, due to their genetic predisposition, were significantly more likely to have MS than individuals without these genes.
There are government guidelines around how much Vitamin D people should take, and taking too much can lead to side-effects. Please talk to your health professional for advice on Vitamin D.
Immunologist Prof Danny Altmann, from Imperial College London, said: “Vitamin D is relatively cheap, safe and many of us would be all the healthier if we could achieve the serum levels that our ancient ancestors presumably acquired when roaming outdoors in temperate climates, unclothed and eating a diverse diet including oily fish.
“While it may be too much to expect therapeutic Vitamin D to treat or reverse ongoing MS, this research will add to the weight of argument for routine Vitamin-D supplementation of foodstuffs as a broad, preventative, public health measure.”
The government is currently debating (LINK) whether to recommend that all people in the “not so sunny” UK consider taking extra Vitamin D.