"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Here’s what you’ll learn when you read this story: The immune system function declines with age, but a ...

We all get sick sometimes. Even something pretty minor, like a cold or flu, can be enough to disrupt your life for a few days. When you have a minor illness, it does more than just make you feel ...

Though there are several immunity-boosting foods, a diet rich in citrus fruits has proved it can support your immune system and fight infection. Known for their vitamin C content, citrus fruits like ...

Add Yahoo as a preferred source to see more of our stories on Google. Those who are at high risk of getting sick should avoid crowded settings during the holidays and ask their visitors to take extra ...

Vitamins and supplements like zinc and cod liver oil are often touted for their ability to boost your immune system, but Jeffrey Bland, the "father of functional medicine," says that's not actually ...

There are vaccines you can get to prevent illness and medicine you can take to treat it. But in between, eating foods that boost immunity can help keep your immune system strong and functioning ...

B cells are white blood cells that form a core part of the body's adaptive immune system, enabling it to recognize specific ...

As cold and flu season begins, you may be wondering what you can do to help keep your immune system strong with all the nasty bugs going around. In addition to staying up to date on your seasonal ...

For many, having a Christmas tree (typically a pine or fir tree) in the living room is a beloved holiday tradition, and the tradition may serve not only a spiritual role but also a health benefit. A ...