High hematocrit can stem from dehydration, altitude, smoking, or serious conditions like polycythemia vera. Learn what drives levels up and why it matters.
Energy drinks and sports drinks serve very different purposes. Here's what's in each, how they affect your body, and which one actually fits your needs.
Kidney pain typically shows up in your upper back or sides, not your lower back. Learn how to tell the difference and what different kidney conditions feel like.