Poor absorption of vitamin D from vegan sources
We know that older people, those with dark skin, and overweight individuals are at risk of being vitamin D-deficient due to impaired synthesis of the vitamin or low uptake. Preliminary studies from Finland suggest that children who eat a vegan diet are also challenged when it comes to absorbing vitamin D.
What the cause is remains to be answered but the majority of good vitamin D sources are of animal origin, and it is generally acknowledged that vitamin D from animal sources is absorbed easier than vitamin D from plant-based sources.
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