It’s supposed to fight off invaders to keep us healthy. But sometimes it turns traitor and attacks our own cells and tissues.

Across the planet, animals are increasingly suffering from chronic illnesses once seen only in humans. Cats, dogs, cows, and ...

Air pollution is linked to several serious health issues, including lung diseases, heart problems, and even brain disorders.

Inflammation is triggered by the immune system and is part of the body's natural response to injuries or disease. However, abnormal inflammation has recently been established as a hallmark for ...

Medications to treat various chronic diseases may hinder the body's ability to lose heat and regulate its core temperature to optimal levels. The loss of effective thermoregulation has implications ...

A groundbreaking study reveals how analyzing the microbiome across multiple body sites helps identify novel microbes and antimicrobial resistance genes, paving the way for new diagnostic and ...

Half of the cells in your body aren't human -- and a new study suggests that many critical to your health oscillate by the hour, day and even the season. The human body contains about 40 trillion ...

Penn Medicine researchers will advance their understanding of the underlying causes of cognitive decline in individuals with Lewy body diseases, like Parkinson's, and identify biomarkers that predict ...