It is my understanding that Vit D2 ( inactive form) needs sunlight ( UV B radiation) to activate it to Vit D3. What’s interesting is that UVB radiation is available during daytime between 10 am and 3 pm. Between Oct/Nov to Mar/Apr, above the latitude of Atlanta Ga, because of the way the earth tilts, the UVB radiation gets filtered out by the atmosphere during this time frame. This is why the more north you go the less Vit D conversion there is. I do not know if there is a latitude where no conversion occurs at all times of the year.
What does this mean? The rate of stress fractures and nonunions/delayed unions ( bones not healing) are up especially during the 1st quarter of the year. This is confirmed by the bone stimulator sales during this time frame. It would be interesting to see if Suicides are temporal and if the first quarter has a spike.
Historically, Vit D3 use to be put in foods and even beer as an additive. In the 50s, a family with Williams Syndrome ( hypersensitivity to VitD3) in the U.K. died because of the additives so they were stopped worldwide. What’s fascinating is that in Finland, the year after they started to not put the Vit D3 in food, the incidence of Diabetes Type 1 skyrocketed. True true and unrelated? It would be interesting to compare the suicide rates pre 1950 and post.
It would be interesting to look at the suicide data through the lens of geography as well as time. Thanks for the post WillBrink.
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