Someone once explained the old adage "starve a col...  ..., when your body just wants to kill an infection. Kurzgesagt , an organization that has explained the immune system to us a few times, explains what happens a...

When I think of a really deadly disease, I think o...  ...I won't mention the exact disease. In this video, Kurzgesagt provides the art and John Green provides the comm...  ...h infects a human body and makes its way past our immune system. Of course, our immune systems always...

Tattoos have been around for thousands of years, a...  ...needles and tattoo ink invading your dermis? Your immune system immediately rushes in to protect you from...  ...l consider a tattoo as permanent. This video from Kurzgesagt is only 7:20; the rest is an ad.

At its most basic level, cancer is when our own ce...  ...fight the danger, but if it gets bad enough, your immune system will need outside help. In this video, Kurzgesagt describes the immune system's battle against cancer in an analogy of a...

Cancer is not caused by bacterial infections or a...  ...and/or powerfully destructive chemicals. That our immune systems go to work constantly to fight the body's...  ...rmalities in different ways. So not only does our immune system look for cells that shouldn't be there (li...  ...ect all our cells to make su...

An amoeba known as Naegleria fowleri is a parasit...  ...ul to humans during one of its three life stages. Kurzgesagt explains exactly how it can eat your brain. It's...  ...it can eat your brain. It's pretty gruesome. Our immune system will fight this amoeba, but that battle do...  ...bout the brain-eating amoe...