You likely already know that bananas are an excellent source of potassium, but that’s not the only nutrient the creamy fruit contains. The many banana health benefits come from a wide variety of vitamins, minerals, and micronutrients, while the sweet taste and satisfying texture make bananas a must-have in your kitchen on a regular basis.
But before we get into all those health-boosting perks, let’s talk about the potassium. Potassium is an electrolyte that supports muscle contraction and nerve function, helps the body move nutrients into cells and waste out of cells, regulates your heartbeat, and helps maintain healthy levels of sodium in the body. When you don’t get enough potassium, your blood pressure and kidney stone risk can increase, plus you may feel weak and tired or even experience muscle cramps or spasms. One medium banana contains 422 milligrams (mg) of potassium, or about 12% of your daily value of the mineral, according to the National Institutes of Health.
In addition to potassium, bananas contain naturally occurring sugars that will fuel your body in a healthy way when you need a pick-me-up or energy boost, as well as fiber, which slows down digestion and helps boost satiety.
Read on for the research-backed reasons that eating a banana every day may help you thrive.
Proven health benefits of bananas
Bananas help you avoid dehydration
Potassium plays a key role in hydration by helping regulate the balance of fluids in your body, especially the electrolytes you lose (like sodium, magnesium, calcium, and potassium) after a sweaty workout. According to the Cleveland Clinic, munching on a banana after a workout may help fight dehydration and aid in post-workout recovery as effectively as electrolyte-rich sports drinks, thanks to the potassium, magnesium, and vitamin B6 they contain—not to mention the fact that bananas are about 75% water.
Bananas nourish your gut bacteria
One medium banana contains 3 grams of filling fiber (about 10% of your daily intake). Underripe bananas contain resistant starch, a type of prebiotic fiber that is not digested by the body and instead serves as fuel for the good bacteria living in your gut. That’s a big win for your overall health, since research suggests these beneficial bugs play a role in your digestive health, brain health, immune system, endocrine system, and metabolism, per the Cleveland Clinic.
Bananas help power your workouts
The best pre-workout snacks are foods that contain natural sugars (a.k.a. carbohydrates) for energy, but aren’t too harsh on your stomach. These are foods that are digested quickly and easily so that your body can use those sugars as fuel during your exercise session. Bananas fit this description exactly, plus they are portable enough to toss in your gym bag or eat on the way to your workout class.
Bananas improve heart health
This is another perk that comes from the potassium in bananas, as this mineral is vital for your heart. Research in the European Heart Journal shows that high potassium intake is associated with lower blood pressure levels and a decreased risk of heart attack and stroke, while a separate study in the New England Journal of Medicine found that increasing potassium levels in people with heart disease reduced their risk of arrhythmias, hospitalization for heart failure or arrhythmia, and death. How? Potassium helps flush excess heart-stressing sodium from your body through your urine, reducing the risk that it may harm your cardiovascular system.
Bananas may support weight loss
Enjoying bananas as part of a balanced diet may help curb hunger while satisfying sweet cravings. According to a review in the Journal of Functional Foods, the resistant starch that nourishes your microbiome may also improve carbohydrate and fat metabolism to support weight loss efforts. Plus, at 105 calories, a medium banana is a low-calorie, high-fiber food, so you can feel good about adding one to a breakfast smoothie, snacking on one when you’re on the go, or slicing one up as a sweet evening treat.
Bananas reduce kidney stone risk
This perk comes from the potassium, which helps your kidneys prevent the buildup of substances (like calcium) that can form kidney stones, or hard masses of minerals that form inside your kidneys and can be painful to pass. A study from the Mayo Clinic found that people who had the lowest dietary intake of potassium had the greatest chance of experiencing a first-time kidney stone.
Bottom line
Bananas have long been considered a staple in any healthy diet, and that definitely still holds true. In fact, the case for bananas only grows stronger when you consider the health benefits you can get from nutrients besides potassium, like fiber. If you’re already eating a banana a day, feel free to pat yourself on the back. And if you aren’t? It may be time to start peeling.
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