Vitamin D helps absorb calcium for strong bones, supports immune function, and may reduce risk of certain diseases. Deficiency is common, especially in northern climates, darker skin, and older adults.
Sources: Sun exposure (15–20 min, a few times a week, arms/legs exposed), fatty fish (salmon, mackerel), fortified milk and cereals, egg yolks. Supplements may be needed if levels are low.
Deficiency signs: Fatigue, bone pain, muscle weakness, frequent infections. A blood test can confirm levels.
Recommendation: Discuss supplementation with your doctor. Excessive vitamin D can be harmful; aim for balance through diet, sensible sun exposure, and supplements only if advised.
Related topics
- Nutrition
- Immunity
- Bone health