We often judge our immune systems based on how many colds we catch in a year, but experts say that’s an oversimplification of what is a highly complex network of cells, tissues and organs that works ...

Your immune system was supposed to protect you from threats, but sometimes it gets confused about what counts as an enemy and starts attacking your own healthy tissues. This internal betrayal happens ...

Cough, cold, sore throat, and tiredness are common problems during changing weather conditions. Many people usually blame ...

Many people brush off frequent illness as stress, weather changes or simply bad luck. A cold that keeps returning, wounds that seem to take forever to heal or a constant feeling of tiredness often ...

Rheumatoid arthritis is an autoimmune disorder that causes inflammation, swelling and pain in joints. It can have a range of impacts, and as of 2019, was thought to impact about 18 million people ...

As we age, our immune system quietly loses its edge, and scientists have uncovered a surprising reason why. A protein called platelet factor 4 naturally declines over time, allowing blood stem cells ...

The Nobel-prize season always kicks off with the award for physiology or medicine, which highlights work in fields such as genetics, cell biology and evolution. This year’s award went to three ...

Seeing a potentially infectious person might kickstart the body's immune system, according to a new study. Guillermo Spelucin via Getty Images When you see someone coughing on a train platform, your ...