Conclusion
Actually, vitamin D deficiency has been linked to countless different illnesses and conditions including multiple sclerosis, autism, rheumatoid arthritis, Alzheimer’s disease and even swine flu! It has been shown to make asthma more severe, as well as eczema and many more associations are coming out all the time.
When you consider the incredible benefits of vitamin D and the dangers of deficiency, it becomes instantly clear that this is something you should seek to get more of in your diet or through your exposure to sunlight. The latter is preferable of course because being outside also means fresh air and exercise in most cases!