The video shows how our lymphatic system works undercover to protect our immune system. The network transports about two liters of lymphatic fluid throughout the body, identifies pathogens, trains ...

The human body’s defensive lineup is impressive—from made-to-order antibodies to natural-born killers. Here’s how it wards off sickness in every season. When pathogens invade our bodies—in the form of ...

Having excess body weight can increase your blood pressure and affect your immune system. Learn what happens to blood ...

A new study has revealed that your immune system is keeping a secret diary, controlling how you get sick. Here is everything you need to know, along with how this study can help you.