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The point is our bodies haven't evolved to process large amounts of ingested D3.
by AntiImperialist 6y ago
The point is our bodies haven't evolved to process large amounts of ingested D3.
- andreygrehov 6y agoOk, I see what you mean now. Interesting. Do you know how much time one would have to stay outside to get, say, 5,000 IU?
- thinkingemote 6y agoYou can use this https://fastrt.nilu.no/VitD_quartMEDandMED_v2.html https://fastrt.nilu.no/VitD_quartMEDandMED_v2.html to calculate how much to get the recommended amount from the Sun which I think is 1000 IU I think 4000 IU is sun burn territory for a single sitting outside. But I only just scanned the website above. I don't know how long it lasts, or if its cumulative, but I heard Vit D is stored in your fat so theres a bit of storage going on. Perhaps therefore, sitting outside in Summer each day during lunch would be enough to get 5000 IU / week.
- AntiImperialist 6y agoDepends. Sunlight just converts a precursor molecule (7-dehydrocholesterol) to D3. The precursor is a product of the cholesterol synthesis system. I personally believe you don't need any exposure to direct sunlight to get required D3 as long as you eat food natural to humans, specially if the diet is close to that of indigenous groups living in similar environment for thousands of years. We store D3 in our fat and you can also get it when you eat animal fat. However, if you really want to use sun exposure, I recommend an app called dminder which tells you, based on your location, if and when sun exposure will give you Vitamin-D.