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That would be in contrast to the common knowledge that 15 min in the sun are enough for a good Vitamin D level, especially 15 min in the African sun. I simply c
by amai 6y ago
That would be in contrast to the common knowledge that 15 min in the sun are enough for a good Vitamin D level, especially 15 min in the African sun. I simply can't imagine that you can live in Africa without getting enough sun. That would mean that you basically have to stay underground all the time. I believe there is a second factor (often overlooked) that causes low Vitamin D level in the blood: Magnesium deficiency: https://pubmed.ncbi.nlm.nih.gov/30541089/ https://pubmed.ncbi.nlm.nih.gov/30541089/
- kevinmchugh 6y agoAs your previous link mentioned, not all of Africa is equally sunny. But really the difference is that people with darker skin need to spend more time in the sun to get enough Vitamin D. At least one source says folks with very dark skin need six times as much sunlight as those with very light skin. I've seen 3 hours daily recommended before as well. It's going to be challenging for an urban person at any latitude to get that much sunlight in a typical day. https://health.usnews.com/wellness/articles/2018-07-18/how-much-time-in-the-sun-do-you-need-for-vitamin-d https://health.usnews.com/wellness/articles/2018-07-18/how-m...