Immunity
Zinc for Colds: Does It Work, Which Form and How Much
What the trials show about zinc and cold duration, which forms and doses make sense, who is at risk of deficiency, and why high doses threaten copper status and smell.
6 min read
#common cold
3 articles
Immunity
Sleep and Immunity: How Sleep Loss Raises Infection Risk
Sleeping under 6 hours raises cold risk fourfold. We break down Prather's experiments, the sleep-vaccination link, and what to do during cold season.
9 min read
Immunity
Vitamin C and Colds: What the Research Shows
Vitamin C doesn't prevent colds in most people, but cuts their length by about 8%. We unpack the myths, doses, the absorption ceiling, and zinc.
8 min read