Bananas have always been the most affordable fruit in Japan and become a cornerstone of my diet. Unfortunately, the so-called Morning Banana Diet (eat only bananas and drink water at room temperature for breakfast) has recently become extremely popular, and banana sales have spiked 70% compared to last year. Retail prices have soared as well, and quiet often bananas even sell out during the day.

Last year the same thing happened with natto, and after scientists debunked the magic weight loss properties everything went back to normal.