Can pomegranate and grapefruit be eaten together?
Under normal circumstances, pomegranate and pomelo can be consumed together, but moderation is advised. Detailed analysis is as follows:

Both pomegranate and pomelo are seasonal autumn fruits, rich in vitamin C, dietary fiber, calcium, phosphorus, potassium, and other nutrients. Pomegranate is known for its unique sweet and sour taste and contains abundant proteins, fats, dietary fiber, riboflavin, thiamine, and other nutrients, offering numerous health benefits. Pomelo is widely appreciated for its cool, refreshing, and slightly sour taste and contains rich proteins, fats, carbohydrates, and coarse fiber.
Consuming pomegranate and pomelo together does not cause any obvious harm and, on the contrary, can supply various nutrients essential for the human body. Both fruits are rich in vitamin C, which provides certain antioxidant effects, helps improve skin condition, and moderate consumption may also have a whitening effect. The dietary fiber they contain helps promote gastrointestinal motility, accelerates digestion and absorption of food, and helps prevent constipation.
Although pomegranate and pomelo can be consumed together, moderation is important. Excessive consumption may irritate the gastrointestinal tract, causing discomfort such as abdominal pain and diarrhea. In daily diets, maintaining a balanced intake of various nutrients and avoiding excessive consumption of any single food is beneficial for maintaining overall health.
References:
[1] Jia Xiaohui, Zhang Xinnan, Liu Yan, et al. Nutritional Value, Health Benefits, and Applications of Pomegranate [J]. Practical Technology and Information of Fruit Trees, 2021, (04):46-47.
[2] Li Liang, Zhu Hanbin, Li Changbin, et al. Research on the Nutritional Components and Health Benefits of Pomelo [J]. Modern Food, 2020, (24):45-47.