Dark chocolate is pitted against milk chocolate in a test of artery function.

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More on chocolate in:
• A Treatment for Chronic Fatigue Syndrome (
• Dark Chocolate and Artery Function (
• Does Chocolate Cause Weight Gain? (

More on stroke prevention in:
• How to Prevent a Stroke (
• Preventing Strokes with Diet (
• PREDIMED: Does Eating Nuts Prevent Strokes? (

And speaking of stroke, stay tuned for my next video Does Diet Soda Increase Stroke Risk as Much as Regular Soda? (

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-Michael Greger, MD FACLM

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43 COMMENTS

  1. I'm sure they could find people that don't like chocolate. I once knew a person who didn't like ice cream. What are the odds she was the only one?

  2. I'm still confused on cocoa, I hear many claiming that it's bad for you and that you can over dose on it, of course if you get too much of anything it is bad for you, but I also hear plenty of good about cocoa as well, so what is the ideal amount of cocoa should one take daily? weekly? monthly? and do the pros out weigh the cons?

  3. Hello Doctor Gregor, I have a request for you. You seem to provide great information on nutrition using scientific evidence. Can you please make a video on how much protein we need in our diet everyday to build muscle at an optimal rate? Also, how should someone eat as a vegan to ensure that he is getting ample protein a day to facilitate muscle hypertrophy? Thanks in advance.

  4. There are people who are allergic to chocolate as well as some who don't like it. They would be perfect subjects for a long term study on those who don't eat chocolate. I'm surprised the researchers have not tapped into this resource.

  5. Thumbs up for Cacao and thumbs down for milk chocolate. We are fortunate here in Central America to have locally grown Cacao and spoonful in a smoothie is a great way to get it in your system.

  6. "I fooled millions into thinking chocolate helps weight loss. Here's how" <— search for this article on Google. Also, I rarely eat chocolate now after watching a documentary of the cocoa industry in the Ivory Coast. After watching that, I understood the importance of Fair Trade chocolate.

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