You can spread a cold for up to two weeks, but you're most contagious in the first few days. Here's what the timeline looks like and when it's safe to return to work.
Tinnitus has no single cure, but therapies like CBT, sound therapy, and neuromodulation devices can meaningfully reduce how much it affects your daily life.
Your blood contains more than just red and white cells. Learn about the main types of blood cells, their subtypes, and how your body continuously produces them.