Plus, the simple strategies to reduce it.

We often judge our immune systems based on how many colds we catch in a year, but experts say that’s an oversimplification of what is a highly complex network of cells, tissues and organs that works ...

Your immune system was supposed to protect you from threats, but sometimes it gets confused about what counts as an enemy and starts attacking your own healthy tissues. This internal betrayal happens ...

Many people brush off frequent illness as stress, weather changes or simply bad luck. A cold that keeps returning, wounds that seem to take forever to heal or a constant feeling of tiredness often ...

Smoke from wildfires and structural fires doesn t just irritate lungs it actually changes your immune system. Harvard scientists found that even healthy people exposed to smoke showed signs of immune ...