The epidemiology of MS is incredibly interesting. There's three groups of people with low rates of MS: 1) People born in northern latitude areas (europe, USA),

The epidemiology of MS is incredibly interesting. There's three groups of people with low rates of MS: 1) People born in northern latitude areas (europe, USA), who then move at a young age close to the equator. 2) People who live their whole lives in an area close to the equator 3) People who were born and raised in areas close to the equator then moved to northern latitudes in adulthood. Compare to people who are more suspectible to MS: 1) People are born in areas close to the equator then move at an early age to northern latitudes 2) People who live their whole lives in northern latitudes 3) People who live their childhood in northern latitudes then move to the equator. So there is a correlation between growing up, regardless of what happens in adulthood, near the equator (maybe from Vit D dosage) and having a lower risk for MS. Cool stuff.