While most health-conscious people support the idea of increasing our fruit and vegetable intake, this new mantra requires qualification. Fruits are often high in fructose, and many people, unknow to themselves have trouble digesting it, leading to range of upsets:
https://www.naturalnews.com/2019-04-04-people-who-have-trouble-digesting-fructose.html
“Studies done here in America have shown that more than 50 percent of the population cannot process more than 25 g of fructose, which can easily be found in just a couple of apples. More than 80 percent cannot process 50 grams of fructose. So what happens to the fructose that is not absorbed by the body? It travels down into the large intestine where it ferments and creates gas. This bloating feeling is common after eating for many people, and this simple thing could very well be the cause. Many people, even those with a fructose intolerance, can often eat fruit but those with a sensitive stomach will more than likely end up with a gurgling gut as the gas moves through it. One way to combat the bloat is to eat foods that have both fructose and glucose as glucose makes fructose easier to absorb. There are many fruits that have a near equal ratio of fructose to glucose such as peaches and grapes. Those like apples, watermelons, and pineapple will still cause problems with the higher levels of fructose that they contain.