Research
Micronutrients & recovery
Vitamin D status is determined by a combination of cutaneous synthesis via UVB exposure and dietary intake, with significant variation based on latitude, skin pigmentation, and lifestyle factors.
Understand that your vitamin D status depends on both sun exposure and diet. If you live at higher latitudes (north of 40°N), have darker skin, or spend little time outdoors, you are at higher risk of deficiency and may need to rely more on dietary sources or supplements, especially in winter.
GoodSupportsHIGH confidence
Vitamin D status is derived from the combination of synthesis in the skin after sun exposure and intake of the two main dietary forms of vitamin D: ergocalciferol (vitamin D2) and cholecalciferol (vitamin D3).
Why this rating
Supported by multiple studies cited regarding latitude, skin pigmentation, and dietary sources.
Source
Vitamin <scp>D</scp>: An overview of vitamin <scp>D</scp> status and intake in <scp>E</scp>urope
A. Spiro et al. · Nutrition Bulletin · 2014
narrative_reviewCited 618×
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