Twenty years ago, I met a couple with a young son who decided not to let the kid have sugar. I wonder how that might have worked out for the kid now that he's grown.
I assume the kid hit 18 and went on a sugar binge as soon as he tasted it the first time.
My parents were very anti-sugar/processed foods and extremely controlling of our diet, there was a lock on the pantry door and everything (which is how I learned to pick locks 😉). All of us went wild in adulthood. All of us are obese except my sister who runs a half marathon per day. The funny thing is my parents never ate healthy, they would devour desserts at work and hide candy in their bedroom closet. My dad still drinks a gallon of chocolate milk per week