The green algae, chlorella, may help attenuate the drop in immune function antibodies associated with over-strenuous exercise.<br /><br />Subscribe to NutritionFacts.org's free e-newsletter and receive a recipe from Dr. Greger's brand-new cookbook, The How Not to Diet Cookbook: <a href="https://nutritionfacts.org/subscribe/" target="_blank" rel="nofollow">https://nutritionfacts.org/subscribe/</a><br /> <br /><br />There is, however, a caveat to the use of chlorella. See my last chlorella video Treating Hepatitis C with Chlorella (<a href="http://nutritionfacts.org/video/treating-hepatitis-c-with-chlorella/" target="_blank" rel="nofollow">http://nutritionfacts.org/video/treating-hepatitis-c-with-chlorella/</a>) to make up your own mind if the benefits outweigh the risks.<br /><br />Here’s the nutritional yeast study I mentioned: Preserving Immune Function in Athletes With Nutritional Yeast (<a href="http://nutritionfacts.org/video/preserving-immune-function-in-athletes-with-nutritional-yeast/" target="_blank" rel="nofollow">http://nutritionfacts.org/video/preserving-immune-function-in-athletes-with-nutritional-yeast/</a>)<br /><br />Here’s some other ways to decrease your risk of upper respiratory tract infections:<br />• Can Gargling Prevent The Common Cold? (<a href="http://nutritionfacts.org/video/can-gargling-prevent-the-common-cold/" target="_blank" rel="nofollow">http://nutritionfacts.org/video/can-gargling-prevent-the-common-cold/</a>)<br />• Preventing the Common Cold with Probiotics? (<a href="http://nutritionfacts.org/video/preventing-the-common-cold-with-probiotics/" target="_blank" rel="nofollow">http://nutritionfacts.org/video/preventing-the-common-cold-with-probiotics/</a>)<br />• Kiwifruit for the Common Cold (<a href="http://nutritionfacts.org/video/kiwifruit-for-the-common-cold" target="_blank" rel="nofollow">http://nutritionfacts.org/video/kiwifruit-for-the-common-cold</a>)<br /><br />The cuddliest way to protect your immune function, though, may be found in this video: Are Cats or Dogs More Protective For Children’s Health? (<a href="http://nutritionfacts.org/video/are-cats-or-dogs-more-protective-for-childrens-health/" target="_blank" rel="nofollow">http://nutritionfacts.org/video/are-cats-or-dogs-more-protective-for-childrens-health/</a>)<br /><br />What else can exercise do? See videos like Longer Life Within Walking Distance (<a href="http://nutritionfacts.org/video/longer-life-within-walking-distance/" target="_blank" rel="nofollow">http://nutritionfacts.org/video/longer-life-within-walking-distance/</a>) and Exercise vs. Drugs for Depression (<a href="http://nutritionfacts.org/video/exercise-vs-drugs-for-depression" target="_blank" rel="nofollow">http://nutritionfacts.org/video/exercise-vs-drugs-for-depression</a>).<br /><br />More on how to reap the wondrous benefits of exercise in:<br />• Standing Up for Your Health (<a href="http://nutritionfacts.org/video/standing-up-for-your-health/" target="_blank" rel="nofollow">http://nutritionfacts.org/video/standing-up-for-your-health/</a>)<br />• Enhanced Athletic Recovery Without Undermining Adaptation (<a href="http://nutritionfacts.org/video/enhanced-athletic-recovery-without-undermining-adaptation/" target="_blank" rel="nofollow">http://nutritionfacts.org/video/enhanced-athletic-recovery-without-undermining-adaptation/</a>)<br />• Paleo Diets May Negate Benefits of Exercise (<a href="http://nutritionfacts.org/video/Paleo-Diets-May-Negate-Benefits-of-Exercise" target="_blank" rel="nofollow">http://nutritionfacts.org/video/Paleo-Diets-May-Negate-Benefits-of-Exercise</a>)<br /><br />Have a question for Dr. Greger about this video? Leave it in the comment section at <a href="http://nutritionfacts.org/video/preserving-athlete-immunity-with-chlorella-2" target="_blank" rel="nofollow">http://nutritionfacts.org/video/preserving-athlete-immunity-with-chlorella-2</a> and he'll try to answer it!<br /><br />Image Credit: abolotnov and Christa via Flickr.<br /><br /><a href="https://NutritionFacts.org" target="_blank" rel="nofollow">https://NutritionFacts.org</a><br />• Subscribe: <a href="https://nutritionfacts.org/subscribe" target="_blank" rel="nofollow">https://nutritionfacts.org/subscribe</a><br />• Donate: <a href="https://nutritionfacts.org/donate" target="_blank" rel="nofollow">https://nutritionfacts.org/donate</a><br />• Podcast : <a href="https://nutritionfacts.org/audio" target="_blank" rel="nofollow">https://nutritionfacts.org/audio</a><br />• Facebook: www.facebook.com/NutritionFacts.org<br />• Twitter: www.twitter.com/nutrition_facts<br />• Instagram: www.instagram.com/nutrition_facts_org<br />• Books (including the NEW How Not to Diet Cookbook): <a href="https://nutritionfacts.org/books" target="_blank" rel="nofollow">https://nutritionfacts.org/books</a><br />• Shop: <a href="https://drgreger.org" target="_blank" rel="nofollow">https://drgreger.org</a>