The first thing that would help is actually having a realistic discourse about food, and not the idiotic - "You shouldn't be eating processed food, its not good for you".

Like most of the food that we eat is not really that bad. Its not optimal for sure, especially for sedentary lifestyles, but a lot of the health problems are not directly tied into the actual food, rather the over-consumption of it, and passing down of bad genetics (for example, children of obese people are more likely to be obese).

European obesity tripled in the last 40 years as well, despite higher quality of food.