The heart is the body's hardest-working muscle. Whether you're awake or asleep, or exercising or resting, your heart is ...

In TODAY.com's Expert Tip of the Day, a cardiologist explains why neglecting your "second heart" can lead to health ...

Microplastics and nanoplastics range from mountain peaks to brain cells, raising urgent questions regarding their impact on human health.

Our world is filled with plastics. Every time we use plastic, whether in tires, clothing or bags, tiny particles are left behind. Researchers at RTI International in North Carolina are studying how ...

Although veins appear blue through the skin, ... a person will donate just 1 pint of blood at a time. ... but it is always red. Blood is essential for the functioning of the human body, ...

3D-printed blood vessels, which closely mimic the properties of human veins, could transform the treatment of cardiovascular diseases. Strong, flexible, gel-like tubes -- created using a novel 3D ...

Researchers from Switzerland and other countries discovered that of the roughly 14,000 known chemicals in food packaging, 3,601 — or about 25 percent — have been found in the human body ...