That’s a great starting point! You’re likely thinking of the common idea that eating bananas increases potassium levels, which is true — but there’s more to the story.
Potassium is crucial for heart health, muscle function, and balancing fluids in the body. A medium banana provides about 422–450 mg of potassium, which is roughly 10% of the daily recommended intake for adults.
But bananas are also known for being a quick source of energy, supporting digestion (thanks to dietary fiber), and containing vitamin B6 and vitamin C.
Some people also say “eating bananas increases serotonin” because they contain tryptophan, though the amount isn’t enough to drastically affect mood on its own — that’s more of a myth.