But all cells in the body have their own clocks. Because these biological clocks have a cycle that is close to 24 hours they are termed circadian (circa means “about” and dies means “day”). We now ...

Your body's immune system is like its own armed forces ... Especially for those who work remotely, where the temptation to snack is higher. Best things you can do to prevent sleep deprivation ...

Normally when a pathogen invades the body, the immune system works to get rid of the pathogen. Often, though, the immune system gets a slow start, which gives the pathogen time to multiply and ...

How vaccines work with the immune system Your immune system is your body's natural defense against toxic or infectious intruders — clinically called agents. Normally, when you get sick ...