banana, milk, or control groups. After six weeks, subjective sleep-quality scores improved in the banana and milk groups.
But there’s an important limitation:
The study was extremely small — the banana group contained only seven people.
Some objective sleep measures also did not show significant differences between groups. Therefore, this study is interesting, but it isn’t enough to conclude that eating bananas before bed reliably treats insomnia.
Think of a banana as a nutritious bedtime snack, not a sleeping pill.
3. Bananas Provide Potassium for Normal Muscle and Nerve Function
Bananas are famous for potassium, and for good reason.
A medium banana provides approximately 422 mg, or about 9% of the Daily Value.
Your body needs potassium for several important functions, including:
Normal muscle contraction
Nerve transmission
Proper heart function
Kidney function
But there’s a common misconception.
A Banana Isn’t an Extremely High-Potassium “Superfood”
Bananas contain a useful amount of potassium,
