Millions of people taking vitamin D2 supplements to boost their health may be inadvertently depleting their body’s stores of the more potent form of the vitamin, according to recent research from the University of Surrey.
The findings challenge common supplementation practices, particularly during winter months when sunlight exposure is limited and many people turn to supplements to maintain vitamin D levels.
Why D2 May Lower D3 Levels
There are two main types of vitamin D supplements available: vitamin D2 and vitamin D3, with D3 considered the more effective form of the vitamin for maintaining health. Vitamin D2 can only be obtained through diet and supplementation, while vitamin D3 is both available in supplements and naturally synthesized in the skin when exposed to sunlight.
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