What Happens to Your Body If You Eat Bananas Every Day

by Ella

Bananas are one of the most popular and widely consumed fruits globally, known for their delightful taste and numerous health benefits. They are packed with essential nutrients like potassium, vitamin C, vitamin B6, and dietary fiber, making them a wholesome addition to any diet. However, as with any food, moderation is key. In this article, we delve into the health benefits of bananas, explore potential risks of overconsumption, and provide guidelines on how many bananas one can safely eat per day to maintain a balanced and healthy lifestyle.

Nutrition Information for Bananas

According to the USDA, a medium banana contains:


Calories: 105
Protein: 1 g
Total fat: 0 g
Carbohydrate: 27 g
Fiber: 3 g
Sugars: 14 g (naturally occurring sugars)
Potassium: 422 mg


Health Benefits of Bananas

1. You May Increase Your Energy

Bananas are a good source of carbs—your body’s main fuel for energy production. According to a 2019 article published in the Journal of Food Science and Technology, bananas contain B vitamins such as vitamins B3, B6 and B12, which help your body synthesize energy.


Bananas can be part of a healthy meal or snack and are best utilized when paired with healthy fats and/or protein. This is because carbohydrates digest more quickly than protein or fat, so pairing a banana with a healthy fat or protein, such as a handful of almonds or a cup of Greek yogurt, will help prolong the energy the banana provides.


2. You May Maintain a Healthy Weight

When eaten as part of a balanced meal, bananas can help keep you satisfied longer. Feeling satisfied between meals reduces the likelihood that you’ll have cravings and exceed your daily caloric needs, which over time, can contribute to weight gain.

While there is no evidence that bananas directly cause you to lose weight, they are a convenient and readily available food option that can be easily incorporated into a nutritious eating pattern to lose weight.

In fact, 2020 research published in Nutrients showed that increasing your fruit and vegetable intake is associated with greater weight-loss success. With bananas being one of the top fruits eaten regularly in the U.S., it’s no surprise that they can help you with your weight-loss goals.

3. You May Increase Your Fiber Intake

Most American adults don’t consume enough fiber each day. According to the American Society for Nutrition, less than 10% of Americans get the daily amount of 28 to 34 grams recommended by the 2020-2025 Dietary Guidelines for Americans.

Medium-size bananas have about 3 grams of fiber each. Fiber is important for many reasons, including keeping bowel movements regular. Pectin, a specific type of fiber found in bananas, can help your body eliminate waste more effectively. As bananas ripen, they lose pectin content, so greener bananas are a better source, per a 2020 study published in the Journal of Food Research.

Bananas also contain a type of dietary fiber known as resistant starch, which helps feed the good bacteria in your gut. Resistant starch found in bananas helps feed the probiotic strains Bifidobacterium and Lactobacillus specifically. These are important members of a healthy gut microbiome and help the body produce compounds that can aid in preventing disease.

Fiber also helps you feel full longer. Compared to other carbohydrate-forward foods that lack fiber, bananas are packed with fiber, which slows down digestion enough to make the energy last. However, it’s still ideal to eat bananas along with protein or healthy fat for sustained energy.

Overall, eating bananas is an easy way to help you reach your daily recommended amount of fiber.

4. You May Improve Your Heart Health

Bananas are known for being a great source of potassium. One medium banana contains 9% of your daily recommended intake, per the National Institutes of Health.

Potassium is found in all body tissues and is essential for normal cell function. It is important for a healthy heart as well. The DASH diet, a protocol commonly recommended to people diagnosed with (or at risk for) heart disease, recommends getting potassium from fruits and vegetables. Bananas are a great way to help you get enough potassium each day.

Getting enough potassium in your diet may also help lower blood pressure. High blood pressure is one of the leading causes of cardiovascular disease, so eating foods containing potassium daily is an important part of a healthy lifestyle. Fortunately, it’s easy to incorporate bananas into foods like smoothies and overnight oats—which can also contain other fruits and whole grains that can promote heart health as well.

5. You May Reduce Your Risk for Chronic Disease

A lesser-known fact about bananas is that they contain phytosterols and carotenoids, both of which have antioxidant properties.

Interestingly, the 2019 article mentioned above states that “bananas have a higher antioxidant capacity than some berries, herbs and vegetables” and, therefore, can aid in reducing the harmful effects of oxidative stress on the body.

Oxidative stress can cause inflammation and damage body tissues. If this continues as you age, it can lead to chronic inflammation—a known driver of diseases such as heart disease, diabetes, cancer and more, per a 2020 article in Ageing Research Reviews.

Consuming fruits and vegetables high in antioxidants can help your body have the tools it needs to help keep inflammation under control.

Read more: Bananas: Calorie Content & Nutritional Value

How Many Bananas Should You Eat per Day?

Now that you know all the ways bananas can benefit you, how many should you eat? Well, there’s no blanket rule. However, sticking to 1 to 2 bananas per day shouldn’t cause issues for most people. They are relatively high in carbohydrates, so eating them along with protein or fat is also advisable to support stable energy levels.

People with advanced kidney disease should limit bananas and other foods that are high in potassium to protect their kidneys and heart from damage.

Eating too many bananas (or other high-potassium foods) can cause excess potassium in the body, also called hyperkalemia. This can cause serious health problems, including heart issues. While most people wouldn’t be able to stomach the number of bananas necessary to cause this to happen, it’s something to be mindful of.

Bananas are best consumed the same as other healthy foods: in moderation and as part of a healthy, balanced meal or snack.

Are there side effects of eating too many bananas?

Nausea: Although potassium is good for the body, ingesting too much of it increases the risk of side effects such as nausea.

Headache: Bananas contain phenylethylamine and tyramine, which can result in an increased flow of blood to the brain and subsequent headaches. The riper the banana, the higher the tyramine content, so it may be best to avoid eating overripe bananas.

Digestive issues: While bananas are a great way to add fiber to your diet and keep you regular, eating too much fiber can cause digestive problems, such as upset stomach, nausea, vomiting, bloating, and gas.

Blood sugar spikes: People with diabetes should eat a well-balanced diet that includes all macronutrients: carbs, fat, and protein. Eating too many bananas might disturb this equilibrium, resulting in blood sugar fluctuations.

Weight gain: Bananas are higher in calories and carbs than other fruits, so eating too many can lead to weight gain.

Fatigue: Bananas contain tryptophan, an amino acid that helps produce serotonin, which helps with sleep. Magnesium, which is a natural muscle relaxant, adds to this feeling. Excessive consumption could therefore lead to drowsiness and fatigue.

Here are some tips to enjoy bananas in a more nutritious way:

1. Choose Ripe Bananas: As bananas ripen, their starch content converts into natural sugars, making them sweeter and easier to digest. Opt for ripe bananas with brown spots on the peel for a more flavorful and nutritious snack.

2. Pair with Protein or Healthy Fats: To slow down the absorption of sugars and enhance satiety, pair bananas with a source of protein or healthy fats. Enjoy a banana with almond or peanut butter, Greek yogurt, or a handful of nuts.

3. Add to Smoothies: Incorporate bananas into smoothies with other nutrient-dense ingredients like leafy greens, chia seeds, or protein powder for a well-rounded and filling beverage.

4. Combine with Whole Grains: Top whole-grain pancakes, oatmeal, or whole-grain toast with sliced bananas for a balanced and energy-boosting breakfast.

5. Make Frozen Banana Treats: Freeze ripe bananas and blend them to create a creamy and dairy-free banana “ice cream” or use frozen banana slices in smoothies for a refreshing and healthier dessert alternative.

6. Use as a Natural Sweetener: Mash ripe bananas and use them as a natural sweetener in baked goods like muffins, pancakes, or oatmeal cookies, reducing the need for added sugars.

7. Banana Slices in Cereal: Add banana slices to your morning cereal to enhance its flavor and provide a nutritional boost.

8. Incorporate into Salads: Combine banana slices with other fruits like berries or kiwi in a fruit salad, or add them to green salads for a surprising touch of sweetness.

9. Enjoy in Moderation: While bananas offer various health benefits, remember to enjoy them in moderation as part of a balanced diet. One to two medium-sized bananas a day is generally a healthy intake for most individuals.

10. Consider Your Dietary Needs: If you have specific dietary needs or health concerns, such as diabetes or weight management, consult a registered dietitian to determine the appropriate amount of bananas to include in your diet.

11. Avoid Banana Chips: Be cautious with processed banana products like banana chips, as they are often fried and contain added sugars and unhealthy fats, reducing their nutritional value.

12. Mindful Snacking: When snacking on bananas, be mindful of portion sizes and avoid mindlessly consuming multiple bananas at once.

13. Hydration: Bananas can be dehydrating due to their high potassium content. Remember to drink sufficient water when consuming bananas to maintain hydration.

14. Precautions for Certain Health Conditions: If you have kidney problems or are on a potassium-restricted diet, consult your healthcare provider to determine the appropriate amount of bananas you can consume safely.


Bananas are a delicious and nutrient-dense fruit that can be a valuable addition to a balanced diet. With their abundance of essential vitamins, minerals, and dietary fiber, they offer numerous health benefits, including supporting heart health, digestion, and mood regulation. However, like any food, moderation and mindful consumption are essential.

By considering individual dietary needs, serving sizes, and potential risks of overconsumption, you can safely enjoy the health benefits of bananas as part of a diverse and wholesome diet. Embrace a well-rounded approach to nutrition, and remember that a variety of fruits, vegetables, whole grains, proteins, and healthy fats are key to maintaining a healthy and balanced lifestyle.



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