Is it okay to eat lychee at night?
It is acceptable to consume lychees in moderation in the evening, but individuals with weak gastrointestinal function, abnormal blood sugar levels, or those close to bedtime should exercise caution. Detailed explanations are as follows:

If dinner is eaten relatively early and in moderate portions, consuming a moderate amount of lychees 2–3 hours before bedtime can help replenish nutrients such as vitamin C and glucose. The tryptophan contained in lychees can, to some extent, soothe the nerves. Eating a small quantity will neither burden the gastrointestinal system nor alleviate hunger effectively.
However, individuals with weak gastrointestinal function experience reduced digestive capacity at night, and eating lychees may cause discomfort such as abdominal distension and acid reflux. Diabetic patients have weakened abilities to regulate blood sugar levels at night, and consuming lychees may more easily lead to blood sugar fluctuations. Additionally, lychees are warm in nature; excessive consumption in the evening might intensify internal heat.
When consuming lychees in the evening, it is advisable to do so 2–3 hours before bedtime, with no more than eight lychees per serving, and avoid consuming them together with high-sugar foods. If you experience gastrointestinal discomfort, abnormal blood sugar levels, or are preparing for sleep, it is recommended to choose other easily digestible foods as substitutes to avoid adverse health effects.