Crabs and watermelons are both cold and cool foods, so it is generally not recommended to eat watermelons immediately after eating crabs, especially for people with certain gastrointestinal dysfunction, so as not to have a certain impact on the gastrointestinal tract, increase the burden on the gastrointestinal tract, and even cause some people to have adverse reactions such as abdominal pain and diarrhea. Therefore, it is recommended to eat watermelon at intervals after eating crabs.

If you eat a lot of watermelons immediately after eating a lot of crabs, it will also affect the absorption of nutrients such as protein and calcium by crabs and reduce their nutritional value.

In addition, if you are allergic to seafood, although there may be no obvious allergic reaction after eating crabs, if you eat watermelon in large quantities immediately, it may aggravate the allergic reaction and cause allergic symptoms such as dizziness, fatigue, nausea, vomiting, fever and rash. Therefore, it is recommended to eat crabs for 2-3 hours before eating watermelons to avoid the above adverse reactions.