Vitamin D helps bones and has many internet superpowers that oversell the evidence. Deficiency is real; miracle claims are noisier.
Sun is not a prescription pad
Latitude, pollution, melanin, clothing, and sunscreen all change how much vitamin D you make. Short, unprotected exposures may help some people; they also raise skin-cancer risk if you burn. Food alone rarely meets needs in low-sun months.
- Fatty fish if you eat them
- Egg yolks
- Fortified milk or plant milk — check the carton
Test with a reason
Treat these as a contribution, not a guarantee of a blood level.
Fatigue has many causes. Ask about testing if you have bone pain, limited sun, malabsorption, or your doctor already monitors it. Supplement doses belong with a professional, especially in pregnancy.
