How long after eating persimmons can one eat crab?

This topic falls under the traditional concept of “food incompatibility.” In fact, the notion of food incompatibility has long been scientifically disproven and is considered a superstition. Persimmons and crabs are both highly nutritious foods, and consuming them together poses no health risks or adverse effects.

Many vegetables and fruits contain tannins (tannic acid), as does red wine; likewise, numerous foods are high in protein. If consuming such combinations were truly problematic, similar issues would arise with many other food pairings. Of course, eating only persimmons or only crabs every day—i.e., maintaining a monotonous diet—can lead to nutritional imbalances, regardless of how nutritious those individual foods may be. The Chinese Nutrition Society recommends dietary diversity, regularly varying food choices and combinations, as the scientifically sound and appropriate approach to healthy eating.