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Can You Actually Boost Your Immune System? Here’s the Truth | Body Stuff with Dr. Jen Gunter

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Can You Actually Boost Your Immune System? Here’s the Truth | Body Stuff with Dr. Jen Gunter

TED 17.06.2021 709 509 просмотров 19 249 лайков обн. 18.02.2026

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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. Think you know how your body works? Think again! Dr. Jen Gunter is here to shake up everything you thought you knew -- from how much water you need to drink to how often you need to poop and everything in between. This TED original series will tell you the truth about what's *really* going on inside you. Want to hear more from Dr. Jen Gunter? Follow Body Stuff on Apple Podcasts: https://link.chtbl.com/BodyStuffYT Visit http://TED.com to get our entire library of TED Talks, transcripts, translations, personalized talk recommendations and more. The TED Talks channel features the best talks and performances from the TED Conference, where the world's leading thinkers and doers give the talk of their lives in 18 minutes (or less). Look for talks on Technology, Entertainment and Design -- plus science, business, global issues, the arts and more. You're welcome to link to or embed these videos, forward them to others and share these ideas with people you know. Become a TED Member: http://ted.com/membership Follow TED on Twitter: http://twitter.com/TEDTalks Like TED on Facebook: http://facebook.com/TED Subscribe to our channel: http://youtube.com/TED TED's videos may be used for non-commercial purposes under a Creative Commons License, Attribution–Non Commercial–No Derivatives (or the CC BY – NC – ND 4.0 International) and in accordance with our TED Talks Usage Policy (https://www.ted.com/about/our-organization/our-policies-terms/ted-talks-usage-policy). For more information on using TED for commercial purposes (e.g. employee learning, in a film or online course), please submit a Media Request at https://media-requests.ted.com

Оглавление (5 сегментов)

0:00 Intro 141 сл.
1:04 Innate Immunity 117 сл.
1:48 Adaptive Immunity 164 сл.
2:52 Boosting the Immune System 253 сл.
4:19 Vaccines 120 сл.

Intro

Transcriber: Turmeric ginger shots, elderberry syrup, vitamin C tablets. No one likes to be sick, so it’s 100 percent understandable why we’re all intrigued by products that promise to boost our immune system. (Music) [Body Stuff with Dr. Jen Gunter] The problem is that we often think about the immune system in the wrong way. We think of it like a muscle that we can strengthen by feeding it lots of antioxidants and supplements. But that's just not how the immune system works. While the immune system can be suppressed and can be less effective -- for example, in people receiving chemotherapy -- the reverse, strengthening the system overall, just doesn't happen. Our immune system is what protects us from the bacteria, viruses, fungi and toxins we encounter on a constant basis. It also plays an integral part in wound healing.

Innate Immunity

It’s an elegant network of cells, tissues and organs, all working together. You can think of the immune system in two broad terms, innate immunity and adaptive immunity. Innate immunity means nonspecific defense mechanisms, and this is our first line of protection. It helps fight off pathogens before they cause a problem. It's like a bouncer at the door of a club. The innate immunity keeps invaders out or neutralizes them shortly after entry so they don't start a fight inside. It can only recognize self, meaning what's allowed in the club, and nonself, meaning what's not allowed inside. Think the physical barriers of our skin, the hairs in our nose, the eyelashes that blink out dirt

Adaptive Immunity

even vaginal discharge that prevents infections. Now if a pathogen does manage to get past the first line of defense, we have another layer of protection, the adaptive immune system, which is more complex and targeted than our bouncer. The adaptive immune system responds to antigens. Antigens are unique proteins on the surface of pathogens, which helps identify what kind of pathogen it is. Kind of like a name tag. Your immune system is constantly reading name tags, and when one is recognized as being on the no-entry list, the adaptive immune system creates special immune cells to attack, which are specialized white blood cells called lymphocytes. Here's what's really amazing: our immune system remembers this process. So the next time we're exposed to that same pathogen, our immune system recognizes it and remembers how to respond. While we're not sure how many different antigens we can recognize, some scientists think that we produce over a billion antibodies. But the important thing to remember

Boosting the Immune System

is that our immune system has many different parts playing many different roles. That's what makes this concept of "boosting" so problematic. When people say "boost the immune system," what do they even mean? Do they mean boost the histamine that's released when exposed to poison ivy? Well, that would you itch a lot more. Do they mean supercharge your T and B cells? Might that lead your body to attack its own cells, as we see with autoimmune conditions? Instead of thinking of a muscle that you can strengthen with one simple exercise, a better analogy may be a garden. Your immune system has many components, just like a garden has many kinds of plants. Each plant needs just the right amount of sun, shade and water. Too much sun might help one plant but destroys another. Increasing any single element can throw off the balance of the ecosystem overall. If you're getting all the nutrients you need from a healthy, balanced diet, taking more of a single vitamin won't help your immune system function any better overall. For some vitamins, if you take in more than you need, your body will just get rid of the excess as waste. Vitamin supplements are only needed if you have a true real deficiency. In fact, some studies tell us that vitamins and supplements, when they're not medically needed, may have negative effects. Things can go wrong with our immune system for sure, like allergies or autoimmune conditions and failure to catch abnormal cells.

Vaccines

But the reasons for each of these things are complex and often not fully understood. And they certainly won't be solved by some immune-boosting miracle pill. There is however, one thing that has been shown again and again to be incredible for your immune system. Vaccines. Vaccines are truly genius. They contain a weakened or inactive part of a pathogen, like the flu, that includes its antigen name tag. They trigger the body into making antibodies without needing to get sick from an illness first. Instead of boosting the immune system overall, they give the system exactly what it needs to respond to a specific pathogen quickly and aggressively. So get your immunizations and get your flu shot every year.

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