It seems that once we humans began to hide from the sun instead of worshiping it, our health woes began in earnest. More and more things are being attributed to a lack of Vitamin D, the “sunlight vitamin.” A new study is linking Vitamin D deficiency with multiple sclerosis (MS).
The research was done at the University of Oxford and shows that while MS is caused by a combination of factors, the correlative one seems to be Vitamin D deficiency. This study follows on an earlier study published in the Journal of the American Medical Association in 2006.
The study didn’t measure Vitamin D levels themselves, but instead looked at MS and glandular fever patients throughout the UK between 1998-2005 and used NASA sunlight intensity data to correlate. They found that 61% of the variation in number of MS cases across England could be explained by available sunlight. Further, 72% of glandular fever patients could be explained this way.
While some studies have refuted a link between Vitamin D and MS (or other neurological diseases such as Alzheimer’s), many more are now finding a relationship.
Unrelated studies into MS populations around the world has found that those areas tend to have a high concentration of Scottish immigrants or ancestry and are often low-sunlight areas (or areas with long winters).