Vitamin D deficiency is often found in patients with headaches and neuralgia, which I’ve already mentioned in previous posts. Chronic pain patients with low vitamin D levels were also found to have poor exercise tolerance, making their rehabilitation more difficult. Now, there is strong evidence from two independent studies, which involved over one thousand people, that those with low vitamin D levels were twice as likely to develop Alzheimer’s disease, other types of dementia, and strokes. The researchers and those commenting on this research called for more studies before any recommendations can be made. This response of the medical establishment is typical in its lack of common sense. Yes, there are dangers in taking too much vitamin D, but shouldn’t they call for doctors to test for this deficiency and correct it when it is present? Even if we don’t know exactly if this supplementation will prevent strokes, Alzheimer’s or headaches, it makes sense to keep everyone’s level in the middle of the normal range.