The Benefits of Beans: We Explore the Scientific Research

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Everyone has heard the infamous saying. You know, the one that has to do with beans being a magical fruit and them making you toot?

While beans, legumes, and pulses are commonly turned into a running joke, they are a  dietary staple of some of the longest living populations.

The scientific data is clear that beans come with a wide array of health benefits. However, these benefits are rarely discussed among the constant shifting of diet fads in the Western world.

Well, it's time to clear the air.

Let's take a deep dive into the science behind beans and legumes to find out if they are magical, good for your heart, cause flatulence, and much more!

To view a specific topic or study, use the handy navigation below.

The Basics of Beans and Legumes

What is a Bean?

To many people's surprise, a bean is actually a seed! They are formed in pods by a group of flowering plants called the Fabacae. These plants can come in a lot of different varieties, but their main commonality is that they fruit beans or legumes.

Compilation of Beans

What's the Difference Between Beans, Legumes, and Pulses?

Much like how all squares are rectangles, but not all rectangles are squares, all beans are technically legumes. As stated above, they all originate from the same group of flowering plants, but certain types of these seeds have been classified as beans (such as black beans and black eyed peas). For the purpose of this article, we'll be using the terms interchangeably because they all contain similar nutritional properties.

To keep things simple, most of the research that we're talking about deals with pulses which are define as the dried, edible seeds of legumes. You're probably familiar with pulses as they encompass many familiar foods such as:

  • Chickpeas
  • Lentils
  • Dried Peas
  • Beans

Nutritional Value Overview

Beans, often touted as the "poor man's meat" have long been a staple in the diets of cultures across the world. With their well-rounded macronutrient profiles, versatile culinary uses, and beneficial phytochemicals, it's no wonder why beans have a special place on our plates. Given the benefits that they bring, without the baggage of animal products, we think that they should be embraced by members of all socioeconomic classes!

Nutrition Facts of Kidney Beans (100g Raw) from Wikipedia

As displayed by the nutrition facts, beans are one of the most nutritionally well rounded foods on the planet. They have high amounts of protein and carbohydrates as well as large quantities of RDAs for micronutrients and minerals. We're looking specifically at kidney beans here, but the macronutrient ratios and abundance of vitamins and minerals will remain pretty much the same or similar for any type of bean or legume.

Studies Done on Beans and Legumes

Beans and Heart Health

Although many people think that its meaning is only reserved for athleticism, your resting heart rate is actually a big indicator of your risk for heart disease and overall mortality. Researchers studied over 20,000 men and women concluded that there was an independent relationship of resting heart rate and cardiovascular disease. Independent meaning that certain factors were weeded out statistically to confirm that resting heart rate is not just a byproduct of poor heart health, but rather a cause of it.

It's no secret that aerobic exercise is one highly recommended way of reducing our resting heart rate, but what if beans could do the same thing? 

There's actually some comparable evidence on this. These researchers (who were actually studying bean consumption vs. diabetes) had 121 subjects with type 2 diabetes eat at least 1 cup of legumes per day or have subjects increase fiber consumption via whole grain products such as breakfast cereals and brown rice.

The legumes group saw many benefits from their intervention including a statistically significant drop in systolic blood pressure. Their resting heart rate also dropped ~3.1 beats per minute!

This led researchers to conclude the following:

Incorporation of legumes as part of a low-GI diet improved both glycemic control and reduced calculated CHD risk score in type 2 DM.

For some greater depth into this study and this topic - please check out the video below.

Slow Your Beating Heart by NutritionFacts.Org

Beans on Lifespan and All Cause Mortality

All cause mortality, otherwise known as simply dying from anything, is often a broad marker chosen by researchers to evaluate whether or not there is a correlation between taking an action (or lack thereof) and not dying. These researchers did a long term study on 785 people between 1988 and 1991 from four different ethnic backgrounds (Japan, Sweden, Greece and Australia) around similar age groups to see if any specific dietary habits resulted in a decrease in mortality risk. Here's what they found:

​Based on an alternative Cox Proportional Hazard model adjusted to age at enrollment (in 5-year intervals), gender and smoking, the legume food group showed 7-8% reduction in mortality hazard ratio for every 20g increase in daily intake with or without controlling for ethnicity (RR 0.92; 95% CI 0.85-0.99 and RR 0.93; 95% CI 0.87-0.99, respectively).
Other food groups were not found to be consistently significant in predicting survival amongst the FHILL cohorts.

This means that no matter what ethnicity the participants were, an increase beans was the only dietary behavior that was shown to increase survival rates among the participants in the study.

Check the video and link below for a more details on this subject.

Beans and Lifespan by NutritionFacts.org

Beans and Diabetes & Blood Sugar

Insulin resistance (which is the main impairment of type 2 diabetes) was shown in this study to be inversely related to bean and whole grain consumption. Researchers took 3871 healthy Korean adults and had them complete a nutritional evaluation survey. Based on the surveys, researchers grouped the participants into five logical categories based on their consumption of 63 different foods. The categories were as follows:

  • Diverse Diet Group
  • Western Diet Group
  • Whole Grains and Beans Group
  • White Rice and Kimchi Group
  • Alcohol and Coffee Group

Researchers took the participant's fasting glucose levels and used these numbers to determine their insulin resistance. After making all the proper statistical adjustments, researchers found that those in the Whole Grains and Beans Group had a 20% reduced prevalence of insulin resistance. Researchers quoted:

After adjusting for potential confounders, subjects in the highest quintile of the whole grains and beans pattern had a 20% reduced prevalence of IR than those in the lowest quintile and displayed a significant trend (OR for highest quintile = 0.80, 95% CI = 0.61– 1.03, P for trend = 0.013). No association was observed between other dietary patterns and IR.​
Check the video and link below for a more details on this subject.

Diabetics Should Take Their Pulses by NutritionFacts.org

Canned Beans vs. Cooked or Dried Beans

If you've gotten this far, you're probably thinking about increasing your intake of beans. If you're planning a trip to the grocery store, you'll quickly notice that you are presented with two options: canned or dried beans (which come in bulk or in a bag). Suddenly, you're faced with a dilemma - which type of beans to buy?

​Luckily, these researchers in 2011 did the necessary work to help guide our decision making process. They scored beans on their nutrient density as well as their nutrient to cost ratio. 

They found that canned or dried beans, often found in the bulk section of the grocery store won out on both of these metrics: They were more nutrient dense as well as more affordable. However, the difference wasn't big enough to count out canned beans all together as they are more convenient and a healthy alternative. The researchers quote:

Results highlight the benefits of choosing dried beans and also illustrate that canned beans, when drained, provide a healthy alternative. Beans, regardless of type/form, are a nutrient rich food and should be encouraged as part of an overall healthy diet.

However, given the sodium content of many forms of canned beans - reaching for the labels that have "reduced sodium" or "no salt added" is always going to be the preferred option.

Check the video and link below for more details on this subject and study.

Canned Beans or Cooked Beans by NutritionFacts.org

Once you get a hang of prepping beans, buying the dried variety actually becomes a convenient choice. Getting the right multi-cooker (an appliance that slow cooks and pressure cooks all in one) or rice maker is an easy way to prepare a batch of dried beans for the week hassle free.

Do Beans Make You Fart? Beans and Flatulence

OK - so you've read all about the benefits of beans, but you still have one major concern: gas. The truth of the matter is that no one likes having the urge to fart in a social setting. It makes for an uncomfortable stomach and a social awkward situation. The sad part is is that people will actually avoid beans because they are afraid of having extra gas!

How To Stop Beans from Causing Gas by Dr. Joel Fuhrman

The relationship between beans and gas isn't as simple as eating them causing it. If you're new to eating beans you may experience a temporary increase, but this isn't permanent. As Dr. Joel Fuhrman explains in the video above, the more beans you eat the better your body gets at breaking down the resistant starches which in itself has several benefits such as colon cancer prevention.

If you're a person that has had an extra sensitive reaction to beans in the past and can't handle eating a single serving, Dr. Fuhrman recommends that you slowly transition by eating smaller amounts such as a teaspon or tablespoon twice a day and slowly work your way up until your body builds up the bacteria that can handle larger amounts.

Delicious Bean Recipes to Try

As always, we recommend a whole food plant based diet without any added oil or sugar for optimal health. However, not everyone adopts a vegan lifestyle for health reasons so we've included several indulgent recipes here as well. Enjoy!

Air Fryer Falafel Balls by Glue and Glitter

Falafels are a delicious way to eat beans and legumes. As a staple in Mediterranean cuisine these flavor packed chickpea balls are usually deep fried. However, with the use of an air fryer, Becky Striepe shows you how to make them just as healthy as they are delicious!

Quinoa Black Bean Burritos by Tess Begg

In this video, Tess Begg shows you how to make delicious and easy oil free black bean burritos with quinoa. With the rise of Chipotle across the globe, burritos have actually become a standard part of the Western diet. Unfortunately, most are filled with meat and cheese which aren't going to give you any benefits in terms of disease prevention. Luckily, these burritos are just as if not more delicious and contain lots of healthy grains and plant foods!

Vegan Sugar Free Baked Beans by Whole Foods Plant Based Cooking Show

​Baked Beans are a staple in American BBQ, but are normally loaded with processed sugar which can potentially negate the benefits of the beans themselves. Luckily, this recipe shows you how to make this staple dish with whole foods, no oil, no processed sugar and low salt!

Black Bean and Sweet Potato Brownies by Plant Positive Running

Many people think of beans as a savory dish, but their starchiness can be used to make some truly epic desserts, like these black bean brownies! Plant Positive Running uses beans as well as sweet potatoes to make brownies that will make you never want to eat the "real" thing again! You'll need a food processor or blender to make this one.

Vegan Protein Brownies Made with Aquafaba by Protein Pow 

We decided to include another black bean brownie recipe for one special reason: aquafaba. Many people don't know this, but aquafaba (the viscous water from beans or legumes) is being used in vegan baking as a replacement for eggs. It can even be whipped into stiff peaks to make things like meringue pies!

Stew doesn't have to be reserved for meat and potatoes. There are many different styles of stew that are delicious and this Mungo Guisado or Filipino Mung Bean Stew is definitely worth a shot!

Conclusion on Beans

As the research has shown, beans are one of the top health promoting food that you can possibly eat. Their impact on disease prevention, management, and overall lifespan has been made clear by the research. We've put the flatulence concern to rest and so there's only one thing left for you (the reader) to do.

Start incorporating beans into your diet!

About the Author Joey Bruno

Cooking healthy, delicious, plant-based meals has been Joey’s true passion since he went vegan in 2015. He has a masters in Nutrition and Food Science and is committed to making the internet a place of education and knowledge rather than misinformation and clickbait. He currently lives in Delaware with his wife.

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