Repeated food punishment

Hello, food variation is very limited, from this I mean that there is no purpose of eating berries if you have already got bread. It would be interesting to have some negative consequence for those who eat always the same things, such as when you eat a lof of bread you get poisoned for bloated belly or you can't eat too much raw chicken if not you get Salmonella. This would be very instructive for those children who eat whatever they find in the 'real life'.