1. Different Digestive Times: Fruits digest more quickly than other foods like proteins or fats. When eaten with heavier meals, fruits may start to ferment in the stomach while waiting for other foods to digest, potentially causing bloating or gas.
2. Acidity and Enzymes: Certain fruits are acidic or require different enzymes for digestion. When mixed with other foods, these enzymes may not work efficiently, leading to slower digestion or discomfort.
3. Nutrient Absorption: Combining fruits with other foods can sometimes interfere with the absorption of nutrients, as fruits are best absorbed when eaten on their own. This is particularly true for fruits high in vitamin C, which can be better utilized when eaten separately.

While some people may tolerate combining fruits with other foods, others may experience digestive discomfort. Eating fruits separately, either 30 minutes before or at least 2,5 hours after meals, may help improve digestion for those sensitive to this.

Eating fruits with plant-based proteins like nut butters can be easier on digestion compared to mixing fruits with heavier foods like animal proteins. Here’s why:

1. Balanced Digestion: Nut butters, such as almond or peanut butter, are lighter and easier to digest than animal proteins. The fats in nut butter slow down the digestion of fruits, which helps prevent the rapid fermentation that can occur when fruits are digested too quickly.
2. Stabilizing Blood Sugar: Fruits are high in natural sugars, which can cause a spike in blood sugar. Pairing them with healthy fats and proteins from nut butter can slow the absorption of sugar, providing a more balanced energy release and preventing sugar crashes. For individuals with diabetes, consuming fruit with a source of fat or protein is crucial to prevent rapid spikes in glucose. Nut butters, rich in healthy fats and proteins, not only enhance the taste but also promote satiety, helping to maintain balanced energy levels throughout the day.
3. Nutrient Synergy: Combining fruits and nut butters creates a nutrient-dense snack. The fiber, vitamins, and antioxidants in fruits complement the healthy fats and proteins in nut butters, improving nutrient absorption and providing a more satisfying meal. 

Overall, pairing fruits with nut butter or other plant-based proteins is a good option for digestion and balanced nutrition, and most people tolerate this combination well.