Regular exercise supports immune health by improving the circulation of your immune cells and reducing inflammation, but ...

Overview Key Takeaways: Your immune system is your body’s built-in defense network, working nonstop to protect you from bacteria, viruses, and other harmful invaders. Your immune … ...

How does the same infection, say the flu or a cold, give some people mild symptoms and leave others suffering? Why do people develop autoimmune diseases? And will we ever be able to predict when—and ...

Experts are hoping the answer may be found in kids. As we continue to learn more about COVID-19, one question on many people’s minds is: Why do some people get sick and others stay healthy?

Ever wondered why things you were fine with as a kid suddenly make you sneeze, itch, or feel unwell? Here’s why allergies can ...