This makes a whole lot of sense. No one is same, not even similar so to say. The billions of connections within the body run errant course to maintain the well-being of an individual. The same food, even the most safe ones, while ensuring well-being in one, might cause some disease in another. So be observant of what you eat and what you feel, if you are feeling right it only means that you are eating right. Just need to groom that observation. Not only food, but even the various self-help approaches or belief system that you follow, has that ingredient of fine individual touch encapsulated within it. Know what will suit you best, do not blindly follow others.