Every day, your immune system performs a delicate balancing act, defending you from thousands of pathogens that cause disease while sparing your body's own healthy cells. This careful equilibrium is ...

For centuries, the nature of a fever — and whether it's good or bad — has been hotly contested. In ancient Greece, the physician Hippocrates thought that fever had useful qualities, and could cook an ...

When you catch a cold or the flu, the misery you feel isn’t just from the invading virus. Instead, your body’s own immune ...

THE HUMAN immune system is full of surprises. Though it has long been known that the body’s internal defences spring into action when an infection-causing intruder—such as a bacterium or virus—is ...

Trillions of microorganisms live in the human gut, collectively forming the gut microbiome. They support important bodily ...

Ramnik Xavier, MD, PhD, of the Department of Molecular Biology at Massachusetts General Hospital, is the senior author of a paper published in Science, "Regional encoding of enteric nervous system ...

I am lying under a blanket, feeling rough, staring at a bowl of oranges. Every fibre of my being is urging me to devour the lot. I can hear my mum – and medical friends at university – insisting that ...

LA JOLLA (July 29, 2025)—Of the 3.6 million babies born in the United States each year, around 80 percent begin breastfeeding in their first month of life. Breastfeeding has known benefits for both ...

It's well-known that a person's immune system wears down over time, becoming less effective as folks progress through middle age and become seniors. But that doesn't appear to hinder the effectiveness ...