What the evidence says. Several controlled trials; effects real but modest or context-dependent.
Nutrition per serving 1 medium (118 g)
Water88.4 g75%
Sugars14.4 g12%
Fibre3.1 g3%
Other carbs9.5 g8%
Protein1.3 g1%
Fat0.4 g0%
What's in one serving, by weight — average composition (USDA).One serving as % of the adult daily requirement (FDA Daily Values). The bold outer ring = 100% of a day's needs.
Banana (Musa acuminata) is a fruit used for dietary potassium supports healthy blood pressure. NutriDex grades the human evidence as Moderate. Bananas are a dense source of dietary potassium and vitamin B6 with modest vitamin C and fibre. Large dose-response meta-analyses of prospective cohorts show that higher overall fruit intake is associated with lower risk of stroke, cardiovascular disease and all-cause mortality, and trials confirm that the potassium bananas supply lowers blood pressure, especially in people with hypertension. Resistant starch from unripe bananas and banana-derived starch modestly improves fasting glucose and insulin in controlled trials, and the soluble fibre/pectin aids stool regularity. However, almost no large trials test bananas as an isolated food, so benefits are inferred from potassium, fibre and total-fruit data rather than from the whole fruit directly. The sugar and rapidly available carbohydrate load of ripe bananas means the glycemic benefit applies mainly to unripe fruit or isolated starch. Overall the human evidence for cardiometabolic benefit is consistent but largely indirect.
✓Part of fruit intake linked to lower stroke and cardiovascular risk
✓Resistant starch (unripe) and pectin support glycemic and gut health
✓Quick, low-fat carbohydrate source for exercise fueling
✓Soluble and resistant fibre promote satiety and laxation
Dosing & Compounds
Typical Dose
1 medium banana (about 118 g edible) provides roughly 105 kcal and 422 mg potassium; 1-2 per day fits within general fruit recommendations (about 2 servings of fruit daily). Greener (less ripe) bananas carry more resistant starch and a lower glycemic impact.
Generally very safe. Latex-fruit syndrome sufferers may cross-react to banana. The readily digestible sugars of ripe bananas can raise post-meal glucose, so people with diabetes should mind portion and ripeness. Those on potassium-sparing diuretics, ACE inhibitors/ARBs, or with advanced chronic kidney disease should moderate potassium intake to avoid hyperkalemia. Bananas are high in FODMAP fructans when ripe and may trigger IBS symptoms in sensitive individuals; they are not a notable oxalate source. Educational only — always check with your doctor or pharmacist before combining Banana with any medicine.
Banana is most often taken for Dietary potassium supports healthy blood pressure, Part of fruit intake linked to lower stroke and cardiovascular risk, Resistant starch (unripe) and pectin support glycemic and gut health, Quick, low-fat carbohydrate source for exercise fueling. Potassium-rich, resistant-starch fruit for heart and gut
Does Banana work — what does the evidence say?
Moderate evidence. Several controlled trials; effects real but modest or context-dependent. Bananas are a dense source of dietary potassium and vitamin B6 with modest vitamin C and fibre. Large dose-response meta-analyses of prospective cohorts show that higher overall fruit intake is associated with lower risk of stroke, cardiovascular disease and all-cause mortality, and trials confirm that the potassium bananas supply lowers blood pressure, especially in people with hypertension. Resistant starch from unripe bananas and banana-derived starch modestly improves fasting glucose and insulin in controlled trials, and the soluble fibre/pectin aids stool regularity. However, almost no large trials test bananas as an isolated food, so benefits are inferred from potassium, fibre and total-fruit data rather than from the whole fruit directly. The sugar and rapidly available carbohydrate load of ripe bananas means the glycemic benefit applies mainly to unripe fruit or isolated starch. Overall the human evidence for cardiometabolic benefit is consistent but largely indirect.
What is the typical dose of Banana?
1 medium banana (about 118 g edible) provides roughly 105 kcal and 422 mg potassium; 1-2 per day fits within general fruit recommendations (about 2 servings of fruit daily). Greener (less ripe) bananas carry more resistant starch and a lower glycemic impact.
Is Banana safe? Any cautions or side effects?
Generally very safe. Latex-fruit syndrome sufferers may cross-react to banana. The readily digestible sugars of ripe bananas can raise post-meal glucose, so people with diabetes should mind portion and ripeness. Those on potassium-sparing diuretics, ACE inhibitors/ARBs, or with advanced chronic kidney disease should moderate potassium intake to avoid hyperkalemia. Bananas are high in FODMAP fructans when ripe and may trigger IBS symptoms in sensitive individuals; they are not a notable oxalate source.
How many studies support Banana?
NutriDex cites 10 sources for Banana, graded "Moderate".
Cite this page
APA
Peh, D. (2026). Banana (Musa acuminata): Benefits, Dosage, Side Effects & Evidence. NutriDex — The Supplement Research Compendium. Retrieved 16 Sept 2026, from https://nutridex.info/s/banana
BibTeX
@misc{nutridex_banana,
author = {Peh, Daryl},
title = {Banana (Musa acuminata): Benefits, Dosage, Side Effects \& Evidence},
year = {2026},
howpublished = {NutriDex --- The Supplement Research Compendium},
url = {https://nutridex.info/s/banana},
note = {Reviewed by Dr Daryl Peh, MBBS Singapore, MMed FM. Accessed 2026-09-16}
}
For medical claims, citing the underlying primary studies linked above is preferred. NutriDex is an educational reference, not medical advice.