There is no ‘one-size-fits-all’ solution to digestive problems.
Actually there is, and it's been known for awhile. A naturopath named Jonn Matsen discovered that separating food according to its acid or base digestion requirements speeded up digestion. As a result, energy that was formerly wasted on endless digestion requirements was released to enable organ cleansing, specifically liver cleansing. And from a cleaner liver, all the organs started healing with incredible results on imporaved health.
There are levels and levels of details to which you can take it to fine-tune it, and they are dealt with in his (few, clear) books. But basically you separate heavy carbs (pasta, rice, bread, potatoes, etc) from meat. So you have a carb meal with vegetables, and then a meat meal with vegetables. And you eat fruit alone or with grains such as oats for breakfast.
That's it. You don't starve, you eat all you want. And you always have vegetables with your meat or heavy carbs. But you just never mix the heavy carbs and meat.
Matsen notes that the reason people originally combined food was specifically to slow down digestion, because everyone did hard physicial work and couldn't afford to get hungry between meals. Now, however, we mostly do little physical work, and use our minds. So we need to speed up our digestion, because we don't have the physical work to burn it off. As a result, most people never stop digesting at all - one meal rolls into the next, forever. But digestion energy is also organ-cleansing energy. So what happens? Our organs never get cleared out of toxins, because there's no time or energy left over from digestion.
I recommend anyone with literally any problem try this for even a week. It's amazing, and after a month it's incredible.
Caveat: Yes, everyone is different. But this approach helps everyone, mostly a lot, sometimes a little, but it always helps, and it does no harm.