Jen Gunter: Can you actually boost your immune system? Here's the truth

Can you actually boost your immune system? Here's the truth

Take vitamin C supplements when you feel a cold coming on? The problem is, you can't actually "strengthen" your immune system, says Dr. Jen Gunter. Diving into the elegant network of cells, tissues and organs that protect us every day, she introduces two kinds of immunity that specialize in recognizing and fighting off bad bacteria, viruses, fungi and toxins -- and shares what you can do to keep your immune system healthy. Want to hear more from Dr. Gunter? Check out her podcast Body Stuff, from the TED Audio Collective.

Many people try to 'boost' their immune system with supplements, but the body’s defenses do not work like a muscle that can be strengthened with extra vitamins. The immune system is a complex network with over a billion antibodies, and its many parts require careful balance, not more of one thing. Taking excess vitamins offers no added benefit for those without deficiencies, and sometimes can even be harmful. The most effective way to prepare the immune system is through vaccines, a healthy diet, enough sleep, and avoiding smoking.