Cold-Season Checklist: Zinc Shortened Colds 33%, Vitamin C Didn’t Prevent Them
Which cold remedies hold up? Five backed by trials (zinc, vitamin D, honey, hand hygiene, probiotics) and five that don’t, with real effect sizes.
Which cold remedies hold up? Five backed by trials (zinc, vitamin D, honey, hand hygiene, probiotics) and five that don’t, with real effect sizes.