Bananas are a popular and affordable fruit in Vietnam. Ripe bananas can be eaten directly or used in baking, ice cream, and smoothies.
Bananas are highly nutritious and offer numerous health benefits.
A medium-sized banana, weighing about 126 grams, provides 112 calories, 1 gram of protein, 3 grams of fiber, 29 grams of carbohydrates, and no fat. Bananas are also a good source of vitamin C, potassium, copper, folate, and magnesium.
Health Benefits of Bananas
- Aids Digestion
Bananas are rich in soluble fiber, which is essential for smooth digestion. They also contain resistant starch, with greener bananas containing more resistant starch than riper ones. This resistant starch, combined with soluble fiber, helps prevent spikes in blood sugar levels after meals.
- Weight Loss Support
When consumed in moderation, bananas can aid weight loss. They also help you feel fuller for longer, reducing cravings.
- Heart-Healthy
Bananas are rich in essential minerals that support cardiovascular health and prevent heart disease. Potassium, in particular, plays a crucial role in regulating blood pressure. A medium-sized banana can provide 10% of your daily potassium needs.
Additionally, the magnesium in bananas helps control blood pressure and lowers the risk of cardiovascular disease.
- Rich in Antioxidants
Bananas contain high levels of antioxidants, including flavonoids and amino acids. These compounds offer numerous health benefits, slow down the aging process, and reduce the risk of heart disease.
When Not to Eat Bananas
While bananas offer an array of health benefits, there are certain times when you should avoid eating them to prevent any undesirable effects on your body.

- Avoid Eating Bananas on an Empty Stomach
While bananas can provide energy, it is advisable not to eat them when hungry or on an empty stomach. This is because the potassium and magnesium in bananas can disrupt cardiovascular balance. Additionally, eating bananas on an empty stomach may cause digestive discomfort and bloating.
According to ThS.BS Le Quang Duong from the Center for Sustainable Health Development, quoted in the newspaper Suc Khoe & Doi Song, eating bananas on an empty stomach can cause a sudden spike in blood sugar levels. This is not advisable for individuals with high blood sugar levels or those with diabetes.
- Avoid Eating Bananas in the Morning
Tryptophan, an amino acid found in bananas, induces sleepiness. When consumed, tryptophan is converted into serotonin and melatonin, neurotransmitters that improve sleep quality and cause drowsiness. Eating bananas after lunch or dinner can provide a serotonin boost, aiding sleep. However, consuming bananas in the morning may reduce work efficiency and cause a lack of focus throughout the day.
Ideal Time to Eat Bananas
According to BS Le Quang Duong, the ideal time to eat bananas is 1-2 hours after a main meal. At this time, the body has partially digested the previous meal, so eating a banana will not overburden the digestive system, and the nutrients will be better absorbed.
Additionally, eating bananas after a meal helps prevent sudden spikes in blood sugar levels.
Bananas are a nutritious fruit with numerous health benefits, but they should be consumed appropriately to avoid any unwanted effects. Hopefully, this information will help you incorporate bananas into your daily diet effectively, maximizing their nutritional value.