Watermelon. Rich in natural fructose, the gastrointestinal system often cannot fully absorb it, thus producing gas.

2. leeks. Vegetables with strong fragrance, such as leek (white part), are rich in fructan, but human beings lack enzymes to decompose fructan, so it is easy to cause flatulence and other problems.

3. BlackBerry. It is rich in antioxidants, but it also contains polyol, the main component of sugar substitutes, which is probably the cause of abdominal discomfort.

4. mango. Its fructose content is much higher than glucose, which makes fructose more difficult to be absorbed, thus inducing abdominal distension or other stomach diseases.

5. apples. Apples are rich in fructose, which can cause digestive problems such as abdominal distension and diarrhea for patients with fructose malabsorption.

References:

Nine kinds of fruits and vegetables are easy to produce gas-People's Network