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Eating legumes every day can effectively treat obesity, diabetes, high blood pressure, high cholesterol, heart disease, or strokes

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“Legumes” sounds like such a fancy word.  Let’s clarify that we’re talking about beans, folks. Beans, lentils, peas, chickpeas, it’s all good… and good for you.  Legumes are amazingly nutritious, high in protein and fiber, low in fat, and low in glycemic load.

Composition with variety of vegetarian food ingredients
Composition with variety of vegetarian food ingredients.

Legumes for heart health

Scientific studies have definitively linked a diet high in legumes with a lower risk of developing obesity, diabetes, high blood pressure, high cholesterol, heart disease, or strokes. As a matter of fact, eating legumes every day can effectively treat these diseases in people who already have them. In one randomized controlled clinical study of over 100 people with type 2 diabetes, consuming at least one cup of legumes (beans, chickpeas, or lentils) every day for three months was associated with significant decreases in body weight (2.7 kilograms, about 6 pounds); waist circumference (a 1.4 centimeter decrease); blood sugar (a 0.5% decrease in HbA1c); cholesterol (an 8-point decrease in LDL, measured in mg/dl); and blood pressure (a 4.5-point decrease in systolic and a 3.1-point decrease in diastolic blood pressures, measured in mm Hg). All of these improvements are impressive! We’re talking about beans, not medicines with all those side effects, right? Right: you can check out the entire study here.

Similar findings have been reported from other studies. An analysis of eight randomized controlled clinical trials including data from over 550 participants with a wide variety of medical problems found that participants who consumed about a cup of legumes every day for 10 weeks had a significant decrease in systolic blood pressure (average 2.25 points). In another study, researchers combined data from ten randomized controlled trials representing over 250 participants who had been prescribed legumes every day for at least three weeks. The legumes varied: pinto beans, chickpeas, baked beans, lentils, and peas in amounts ranging from 1/2 cup to 2 cups. None of the participants was taking cholesterol-lowering medication, and yet the legume diets resulted in an average 8-point decrease in LDL cholesterol (that’s the low-density lipoprotein, the “bad” cholesterol). This is better than many people can achieve with pills!

How can beans have all of these benefits?

Legumes are high in fiber, specifically viscous soluble fiber, which not only slows their absorption in the small intestine, but also binds up certain molecules having to do with cholesterol. This makes legumes very low in glycemic index and load, meaning they result in lower blood sugars and less insulin released after eating them. This fiber also lowers cholesterol levels.

But wait — there’s more: not only are legumes high in fiber, they are also high in protein, making them very filling and satisfying, so people tend to eat less of other things. And they contain plenty of potassium, magnesium, folate, and other plant nutrients that are associated with lower blood pressure and improved cardiovascular health.

Despite all of this good evidence, people in the United States tend not to eat a lot of legumes. Given how healthy and economical beans, lentils, chickpeas, and peas are, we aim to help with some suggestions:

  • Chili: this popular dish can be super-healthy, too. Omit any meat and add extra beans (no-salt-added or low-salt canned beans work well).
  • Lentil or minestrone soup: hearty and warming soups can easily be made at home or purchased (be sure to purchase low-salt varieties).
  • Hummus: you can make this at home.
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