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Eat Beans to Live Longer

Beans, beans, they’re good for your heart; the more you eat, the…longer you live? Legumes may be the most important predictor of survival in older people from around the globe. Researchers from institutions around the world looked at five different cohorts in Japan, Sweden, Greece, and Australia. Of all the food factors they looked at, only one was associated with a longer lifespan across the board: legume intake. Whether it was the Japanese eating their soy, the Swedes eating their brown beans and peas, or those in the Mediterranean eating lentils, chickpeas, and white beans, legume intake was associated with an increased lifespan. In fact, it was the only result that was plausible, consistent, and statistically significant from the data across all the populations combined. We’re talking an 8% reduction in risk of death for every 20 gram increase in daily legume intake. That’s just two tablespoons worth! So if a can of beans is 250 grams, and we get 8% lower mortality for every 20 grams, if we eat a can a day can we live forever?

If we want to increase our lifespan, we should eat beans. If, however, one wants to decrease their lifespan, studies suggest eating a bean-free diet may increase our risk of death.

Having arrived at the one dietary fountain of youth, why aren’t people clamoring for beans? Fear of flatulence.

So is that the choice we’re left with: Breaking wind or breaking down? Passing gas or passing on? Turns out that people’s concerns about excessive flatulence from eating beans may be exaggerated.

A recent study involved adding a half-cup of beans every day to people’s diets for months to see what would happen.  The vast majority of people experienced no symptoms at all. However, a few percent did report increased flatulence, so some individuals may be affected. But most aren’t. Even among those that were affected, 70% or more of the participants felt that flatulence dissipated—no pun intended—by the second or third week of bean consumption.  So we’ve just got to stick with it.

And a small percentage reported increased flatulence on the control diet without any beans. People have preconceived notions about beans such that just the expectation of flatulence from eating beans may influence their perceptions of having gas. Researchers didn’t actually measure farts in this study, they just asked participants how much gas they had. We know from previous studies that if someone eats a product that’s labeled to have something that may cause intestinal distress, it causes more intestinal distress—whether it actually contains that ingredient or not. In other words, the mere belief that we’re eating something that causes us intestinal distress can cause actual intestinal distress.

So people thinking beans are going to cause gas may just be more likely to notice the gas they normally have. Either way it tends to go away. After a few weeks of daily bean consumption, people perceive that flatulence occurrence returns to normal levels.

In another study, researchers added more than a half a cup of kidney beans to people’s daily diets, and the research subjects reported that the discomfort they initially felt within the first day or two quickly disappeared. We’ve just got to stick with it.

The bottom line is that an increasing body of research supports the benefits of a plant-based diet, and legumes specifically, in the reduction of chronic disease risks. In some people, increased bean consumption may result in more flatulence initially, but it will decrease over time if we just keep it up. Doctors should recommend a bean-filled, plant-based diet to their patients, as the nutritional attributes of beans far outweigh the potential for transitory discomfort. The long-term health benefits of bean consumption are great. Eating beans in the long term may make our terms on earth even longer. (For cooking tips, see 7 ways to avoid gas from beans.)

I’ve previously covered intestinal gas in one of my more amusing blog posts, Beans and Gas: Clearing the Air.

More on the benefits of beans in:

In health,
Michael Greger, M.D.

PS: If you haven’t yet, you can subscribe to my free videos here and watch my live year-in-review presentations Uprooting the Leading Causes of Death and More Than an Apple a Day.

Related:
7 Ways to Avoid Gas From Beans
Best Tips for Cooking Beans

Why You Should Eat More Beans

Read more: Health, Diet & Nutrition, Eating for Health, General Health, Men's Health, Natural Remedies, Videos, Women's Health, , , ,

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Dr. Michael Greger

A founding member of the American College of Lifestyle Medicine, Michael Greger, M.D., is a physician, author, and internationally recognized speaker on nutrition, food safety, and public health issues. Currently Dr. Greger serves as the Director of Public Health and Animal Agriculture at The Humane Society of the United States. Hundreds of his nutrition videos are freely available at NutritionFacts.org.

146 comments

+ add your own
3:27AM PDT on Jun 11, 2014

The only bean I can eat is a green bean. As for the others, yuk!!

7:51AM PDT on Apr 4, 2014

thanks

5:24AM PDT on Apr 4, 2014

OK

10:14PM PDT on Mar 28, 2014

I love three bean salad. Easy to make and it makes a really quick, delicious stick-to-your-ribs lunch for work.

5:22AM PDT on Mar 28, 2014

Thank you

4:45AM PDT on Mar 27, 2014

Thanks.

1:26PM PDT on Mar 26, 2014

Love beans, thanks.

7:50PM PDT on Mar 25, 2014

Thank you!

4:31AM PDT on Mar 25, 2014

ty

8:57AM PDT on Mar 24, 2014

thank you

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