Heart rate is one of the most powerful—and underestimated—indicators of your cardiovascular health. Understanding how it ...

The heart is the body's hardest-working muscle. Whether you're awake or asleep, or exercising or resting, your heart is always at work. It pumps blood through arteries to deliver oxygen to organs and ...

Your Blood Vessels Could Circle Earth Four Times Laid end to end, an adult's blood vessels could circle Earth's equator four ...

Everywhere scientists look for microplastics, they've found them -- food, water, air and some parts of the human body. But examinations of our innermost organs that aren't directly exposed to the ...

Researchers investigated when the body starts exerting more energy to keep itself cool at high temperatures. They found that this upper-temperature limit lies between 40℃ (104F) and 50℃ (122F) when ...

Some good news, then, from researchers at Northwestern University, in the US. In 2025, they found a way to combine two ...

Recognizing the body’s signals of a heart attack can mean the difference between life and death. Heart disease remains a leading cause of mortality globally, yet many people miss or misinterpret the ...

Editor’s note: After surviving for two months with a transplanted pig heart, David Bennett died March 8. “We have gained invaluable insights learning that the genetically modified pig heart can ...