Can pineapples and sugarcane be eaten together?
Generally speaking, pineapple and sugarcane can be consumed together, as long as intake is moderate. Detailed analysis is as follows:

Pineapple contains nutrients such as vitamin C and bromelain, while sugarcane is primarily composed of sucrose, water, and small amounts of minerals. When eaten together, they provide a variety of different nutrients. The sweet-tart juiciness of pineapple combined with the crisp, refreshing sweetness of sugarcane enhances the sensory experience. Under normal circumstances, the components in these two fruits do not interact to produce harmful substances, making them suitable for healthy individuals to consume together in moderation.
Before eating, pineapple should be soaked in salt water for 15–20 minutes to reduce the irritation of bromelain on the oral mucosa. Sugarcane should be thoroughly washed, peeled, and carefully checked for signs of mold, such as red discoloration or unusual odors. Both fruits contain significant amounts of sugar, so consumption should be controlled to avoid excessive sugar intake in a single sitting. Individuals who are allergic to pineapple or sugarcane, as well as those with weak gastrointestinal function who are prone to acid reflux or diarrhea, should consume them cautiously or avoid combining them to prevent discomfort.