NBC News medical contributor Dr. Natalie Azar and TODAY health and nutrition expert Joy Bauer stop by Studio 1A to share tips ...

While the fabled fountain of youth may not actually exist, a new type of therapy now does.

Your immune system is your body’s built-in defense network, working nonstop to protect you from bacteria, viruses, and other ...

The immune system is your body’s defense, helping protect against infection from harmful pathogens like bacteria and viruses. Popular immune system boosters include dietary supplements containing ...

Regular exercise supports immune health by improving the circulation of your immune cells and reducing inflammation, but overtraining may weaken defenses.

Q. Is it really possible to “boost” your immune system, or is that a myth? A. When flu season hits or stress runs high, you’ll often hear advice on how to “boost” your immune system. But here’s the ...

Recent studies have shown that even if you feel healthy and fit, your immune system could be aging quicker than you think, which could increase the risk of infections and immune-related disorders.

Trillions of microbes live in the human gastrointestinal tract, where they play critical roles in our health and biology; they can help us break down food, absorb nutrients; and they affect the immune ...

We're officially in respiratory virus season, and it's expected to last through mid-May. There are ways to protect against viruses like Covid-19, influenza and RSV naturally. Mandy Gaither explains ...

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 ...

Training yourself to expect good things to happen sounds like helpful advice in general. Now, new research suggests that good ...