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Knowledge·Nutrition·9/2/2026

Vitamin D: Bones, Testing, Supplements, and the Risks of Megadoses

Evidence-based guide to vitamin D: cholecalciferol metabolism, calcium homeostasis, immune function, 25(OH)D blood testing, dosages, and toxicity risks.

  • #витамин D
  • #холекальциферол
  • #кальций
  • #иммунитет
Vitamin D: Bones, Testing, Supplements, and the Risks of Megadoses
Knowledge·Nutrition·9/1/2026

Calcium in the Body: Why It Matters, How to Recognize Deficiency and Excess, and How to Choose Supplements Safely

A practical guide to calcium: its roles in bone and neuromuscular function, links with vitamin D and parathyroid hormone, food, testing and supplement safety.

  • #кальций
  • #кости
  • #витамин D
  • #паратгормон
Calcium in the Body: Why It Matters, How to Recognize Deficiency and Excess, and How to Choose Supplements Safely