Comparing the immune system-boosting effect of cooked versus raw kale.
Images thanks to Martin King and Clindberg via Wikimedia Commons.
There were some extraordinary reports last year on cruciferous vegetables, For example, the immunostimulatory effects, of kale. So simple an experiment I don’t know why it hasn’t been done before. Roll up your sleeve, take some white bloodcells, drip a little kale on and see if it boosts their ability to produce antibodies. Here’s the control—no kale, which is basically the American diet, though if you check with the USDA we do consume as a country, annually per capita, 0.28793567 and change pounds. That’s a cup of kale per person… per year. So the average American is responsible for eating about a half teaspoon of kale a week, and kale consumption is in decline…
So anyways, here’s the control, then you start adding a billionth of a gram of kale protein per liter—just slightly less than U.S. consumption, and look at that spike, quadrupling antibody production with… kale. These data provide valuable information to confirm yet another beneficial function of kale.
Now that’s for raw kale, what if you cooked it? And not just cooked it, but cooked it to death—boiled it, for a half an hour. What do you think happened? Did boiling abolish it’s immunostimulatory effect? Here’s the control again. The filled circles are the cooked, the unfilled the raw, and the cooked, worked even better.
To see any graphs, charts, graphics, images, and quotes to which Dr. Greger may be referring watch the above video. This is just an approximation of the audio contributed by veganmontreal.
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The bioavailability of some phytonutrients is increased by cooking. See my Best Cooking Method video to find out which vegetables are better cooked and which are the best to eat raw. Check out my 33 other videos on greens and hundreds of other videos on more than a thousand subjects. And note that the study I'm talking about here is published in an open access journal, so you can click on it above in the Sources Cited section and read it full-text for free.