Blood clots can happen to anyone. The likelihood that a blood clot will develop increases if you’ve had an injury to a vein, have reduced blood flow due to limited movement, have had recent major surgery, or if you have a family history of blood clots.

A high red blood cell count can occur for many reasons, including excessive cell production, changes in blood volume, or underlying medical conditions. Sometimes, the cause is unknown. Erythrocytes, or red blood cells (RBCs), help carry nutrients and ...

Blood tests are helpful for monitoring your overall health. But research suggests they can also give us clues about the development of some cancers.

You should donate blood a max of six times per year. You can donate platelets 24 times a year, and plasma 12 times a year. Pregnant women, people with anemia, dementia, or HIV should not donate blood. If you give blood regularly, don't fret. Contrary to ...

Some blood clots form in blood vessels just beneath the skin’s surface, causing inflammation that a person can see and feel. However, the most serious clots occur in veins deep inside the body, causing different symptoms or none at all. A blood clot is a ...

Coughing up blood — a symptom known as hemoptysis — can be a sign of several different conditions. Many of these conditions can be serious, and some even life threatening. One of the conditions in which hemoptysis may appear is a pulmonary embolism, a ...

One pet blood donation can saves the lives of three animals, according to veterinarian Dr. Meghan Respess Kelli Bender is the Pets Editor at PEOPLE. She has been working at PEOPLE since 2013. Her work has previously appeared on MTV, The Frisky, Vice, and ...

Soon after SARS-CoV-2 began its assault on the world, scientists began searching for clues about what, if any, factors made people more or less likely to get infected with the virus, and more or less likely to get severely sick if they did. Early studies ...

The fibrinogen blood test is used to assess how well the protein called fibrinogen — also called coagulation factor I — performs in the blood and to measure its levels in your blood. The test is also called the factor I (fibrinogen), serum fibrinogen ...