Chamomile tea may offer modest benefits for blood pressure through relaxation and blood vessel effects, but it's no substitute for medication or lifestyle changes.
Iron, vitamin D, and zinc are the vitamins most likely to affect hair growth—but biotin probably isn't worth the hype unless you're actually deficient.
Green diarrhea is usually caused by food, bile, or a short-lived infection. Here's what your stool color might be telling you and when to see a doctor.