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  • Michael Greger M.D.

    Please feel free to post any ask-the-doctor type questions here in the comments section and I’d be happy to try to answer them. And check out the other videos on children. Also, there are 1,449 other subjects covered in the rest of my videos–please feel free to explore them as well!

  • Turing

    Why do you think the vegans in the British study had the lowest IQs? This is the opposite of what happened in the other study. Do you have a link to the full 1980 study?

    • KeyLimePi

      @Turing: From what I’ve seen, vegan kids are amazingly intelligent. The 1970 British study you refer to only had 9 vegans in it among thousands of people, which makes any results regarding veganism utterly meaningless. A mild caution in your chosen study states, “this estimate must be viewed with caution as only nine participants were vegan.” It’s always that way with these studies that supposedly spell disaster for vegans, it always turns out that the number of vegans in them was close to zero. Hmm, makes one wonder. If you believe that adding cow’s milk and bird eggs to a vegan diet ups anyone’s IQ, then what can I say to you? Anyhow, since your comment’s 3 years old, I’m posting this for others, not necessarily to you.

      • Hinrich Wrage

        The other cohort had only 6 vegans. So what is the point?

        • VeganKeyLimePie

          Anti-vegans are coldhearted morons. Someone should study their IQ.

        • VeganKeyLimePie

          I told you the point but someone (you?) had it deleted, lol.

          • Thea

            VeganKeyLimePie: Your post was in clear violation of the posting rules for NutritionFacts. As moderator, I deleted your post. Please review the posting rules by clicking the green Comment Etiquette button at the top of the comments section.

  • Christina Marquardt

    I am raising my daughter vegetarian, mostly vegan. She was doing sign language by 3 months, and could speak before she was 1. She has absolutely no issues in school, and at 8, is reading at a 6th grade level. She also understands words up to 12th grade level. Though I don’t know whether intelligence causes vegetarianism or vice versa, the diet and lifestyle really works for us, and it helps us stay healthy and take care of our planet too!

  • veggieone

    Are you a vegetarian, Doctor?

    • Thea

      veggieone: I do not speak for Dr. Greger, but in case he doesn’t have time to reply, I thought I would share that it is my understanding that Dr. Greger does indeed follow his own nutrition recommendations – which is to be a whole plant food based eater. The following link is the complete, more detailed set of nutrition recommendations:

      Hope that helps.

  • Anastasia

    My question is this: does this necessarily indicate anything? Vegetarians & vegans in generally are MUCH more health conscious than those eating meat, who may also include many processed foods. So, perhaps the real question is they are doing better because of other junk foods that they leave out? I don’t think this conclusively proves evidence against.

    • puntloos

      This was my question too. To be veggie requires a considerable amount of effort, escaping from peer pressure, habit etc etc, all things that you need intelligence for. and when you then find a partner they are likely to be in similar (intelligence) circles so your kids are gunna b samrt.

      • Joseph Gonzales R.D.

        Great points! I think Dr. Greger is just reporting the studies, which can all be found in our “sources cited” section. Perhaps the researchers discuss these points in their papers.

    • AbbyN

      Being vegan does not equate to being a healthy eater. Any plant-based doctor (Including Dr. Gregor) will tell you that. Eating potato chips and Oreos makes you vegan, but not healthy. And in the same respects, eating non-vegan does not automatically make you a junk food eater.

      • Eugeniu Sofroni

        False, Dr. Greger has a few studies that answered that question already and it looks like vegan junk eating couch potatoes do better than meat eating marathon runners.

        Look for these on his YouTube channel

        1. Arteries of vegans vs runners
        2. Is it diet, the exercise or both
        3. Diet vs. Exercise for weight loss

  • ryan

    Couldn’t find a link to the article” Mental age and I.Q. of predominantly vegetarian children.” Could you provide a link to this article, please?

  • Hinrich Wrage

    On average, vegans had a childhood IQ score that was nearly 10 points lower than other vegetarians: mean (SD) IQ score 95.1 (14.8) in vegans compared with 104.8 (14.1) in other vegetarians (P=0.04)