I thank my lucky stars my parents had no issues about food, despite both being brought up during WWII with rationing. Both were slim/normal weight all their lives, as were their own parents.
Back in the 60s and 70s, when I was growing up, we had 3 meals a day, at a table, and no eating in between meals - if you pleaded hunger you got an apple or piece of bread and butter. Biscuits and cakes were for special occasions, not snacks, although DM always made a pudding. Limited pocket money meant DB and I could only buy a few sweets a week. We drank squash, milk or water. Crucially, no one banged on about healthy eating. Ever. We just ate what was put in front of us, and it was good home-cooked meat/fish/veg/dairy with a roast every Sunday.
Result - I don't have hang ups about food, eat what I like, when I like, but because of the habits I grew up with I just find myself most comfortable with eating "everything in moderation". I have been the same size and weight since I was about 18.
I have tried very hard to be the same with my DC, but the obsession society now has with healthy eating, thin-ness, and all round body consciousness means, ironically, DD, 20, has a critical view of herself which is totally unjustified. She now thinks fat in food is evil, as are carbs, and goes on ludicrous diets to detox and lose weight (she is a size 8-10!).
I tried my hardest to raise a daughter with no body issues, never spoke about dieting or made disparaging remarks about my own body (or hers!) and yet still the propaganda from women's mags and the celeb culture has managed to give her complexes about non existent body issues.
This isn't a stealth boast, but to point out parents don't hold all the answers to their children's atitudes to food.