> You'd have to desire to eat e.g. yogurt with added sugar over one without.

So in your mind, there are alternative, inexpensive 6- and 12-packs of plain, unsugared yogurt sitting in national grocery chains, just waiting to be consumed by people with no sense of taste at scale?

Edit: also keep in mind that people who have lost 40% of their sensory input are apt to go through a depression, and that being sedentary has a lot of risk factors that overlap with the risks from obesity.