Salt bananas, which spread by words, have also been adopted in corporate heatstroke countermeasures, and Dr. Fukuda says they can also be used in everyday life.

Dr. Fukuda said, “You sleep for seven or eight hours at night, right? During that time, you don’t drink water. But because you sweat, you may become dehydrated without realizing it.” He continued, “I think eating a salt banana as a nighttime snack is very good, and I recommend it.”

The salt banana, created by a doctor in Yamanashi, is a food-based measure against heatstroke. In this year’s hot summer, why not give it a try?