Why can the human immune system often remember a vaccination for a whole lifetime? Researchers at ...

From cholera to norovirus, Giardia to hookworms, the gut is vulnerable to an impressive array of pathogens. To keep us alive in the face of this onslaught, the intestinal immune system must be ...

It's widely known that breastfeeding impacts the health of both mother and child, but the underlying biology that leads to ...

Your immune system may be weak if you have frequent, severe, or extended infections. Learn more signs of a weak immune system.

Vitamin C and vitamin D both support immune function in different ways, but neither will prevent you from getting sick on their own. Vitamin C may slightly shorten colds, while vitamin D deficiency ...

Add Yahoo as a preferred source to see more of our stories on Google. With the peak of cold and flu season here, did you know that getting enough sleep can help protect you from getting sick? “Sleep ...