With each heartbeat, blood courses through your body. Some traverse arteries from the lungs back to the heart, and some navigate through capillaries in the thinnest layers of your eyelid, almost ...

Cold weather can have several effects on your body during pregnancy that are worth paying attention to. Lower temperatures can slow blood flow, and you might not feel as thirsty as in warmer months.

Drinking water begins hydrating you within minutes. Water enters your bloodstream quickly. It then spreads throughout your body's tissues and cells. This entire process takes about one to two hours ...

Memory T cells are a special type of white blood cell that "remember" past infections and vaccines, helping our bodies to ...

The risk of a blood clot traveling around the body is highest within the first 4 weeks after it initially forms. However, health experts are unsure of exactly how long it takes for a blood clot to ...

Scientists are learning how the brain knows what’s happening throughout the body, and how that process might go awry in some ...

Flying puts significant strain on your cardiovascular system due to reduced cabin pressure, lower oxygen levels, and dry air. Your heart works harder, blood thickens, and immobility slows circulation, ...