Can I eat grapes and lychees?
Generally speaking, grapes and lychees can be consumed together in moderation, but attention should be paid to controlling the intake. The specific analysis is as follows:

Normal individuals can benefit from eating both grapes and lychees in moderate amounts, as they provide diverse nutrients. Grapes are rich in vitamin C, anthocyanins, and dietary fiber, while lychees contain glucose, B vitamins, and iron. Combining the two fruits not only enhances flavor but also supplies the body with essential vitamins, minerals, and antioxidants.
Patients with diabetes should be cautious, as both grapes and lychees are high in sugar and excessive consumption may lead to a rapid increase in blood glucose levels. Individuals with allergies may experience symptoms such as rashes or oral tingling if they are allergic to grape skins or lychee pulp, and should avoid consumption. Those with weak gastrointestinal function may find the organic acids and fructose in these fruits irritating to the digestive tract, potentially worsening symptoms such as bloating and diarrhea.
When consuming these fruits, it is important not to exceed a total of 200 grams in one serving, avoid eating them on an empty stomach, and ideally pair them with protein-rich foods like yogurt or nuts to slow down sugar absorption. If allergic or digestive symptoms occur, consumption should be stopped immediately and the body's reaction monitored.