3 ms·
Most of the people on HN probably have Vitamin D deficiency - even living in the mostly sunny bay area if you don't get 30min of daily sun exposure in a t-shirt
by fossuser 10y ago
Most of the people on HN probably have Vitamin D deficiency - even living in the mostly sunny bay area if you don't get 30min of daily sun exposure in a t-shirt and shorts you're probably lower than the recommended ng/ml especially if you have darker skin.
- jschwartzi 10y agoThis is one of the reasons cow's milk is Vitamin D enriched. Most people don't otherwise receive enough sun exposure to synthesize it.
- fossuser 10y agoI think that started as a way to prevent rickets in children. For adults the amount of vitamin D you get from enriched milk is not concentrated enough to supplement for inadequate sunlight (even if you drank a glass a day which most adults don't).