Are some people saying that today's parents care less about their children's wellbeing than the parents of other generations?
Marketing and TV advertising in the 50's and 60's was fairly unsophisticated. Nowadays, marketing firms employ teams of psychologists to create far more effective targeting of adverts. This extends to supermarkets where food products are carefully placed with the aim of enticing - even to the point of wafting around food smells to make people feel hungry and buy more.
It wasn't until I was in my teens that burger bars gradually became a common sight with the introduction of Wimpy Bars. These were followed in later years by McDonalds, Kentucky Fried Chicken, etc., and then lots of independent spin-offs. Nowadays, most urban areas will have several fast food outlets, selling chicken and burgers at ridiculously low prices. One can only wonder at the quality of meat these small operations are purchasing to be able to sell food so cheaply.
I see secondary school children and college students going straight into these fast food joints at lunchtime and the end of the school/college day. Their taste buds have been attuned to this high salt, high fat type diet and it is difficult for parents and schools to wean them off this junk food. Of course, parents should try and provide healthier food but even if they do, it is very difficult when the children are older to control what they eat.
I agree with Mamie who referred to the extremely enlightening documentary The men who made us fat. From what I recall the maker of this film traced the "snacking" and "super-sizing" trend back to the US where food manufacturers realised that they could make much bigger profits by convincing people that they were getting a "bargain" if they spent a little more money for what seemed like a lot more food. And I expect everybody remembers the gradual introduction of snacking between meals, with the adverts eventually convincing people that it was perfectly natural and desirable for people to eat between meals "A Mars a day helps you work, rest and play" "Milky Bar - the snack that you can eat between meals without spoiling your appetitite", etc. etc.
It's my understanding that the majority of nutritionists, dieticians and doctors dealing with obesity-related illnesses say that, whilst exercise is important, obesity cannot be tackled without considerably reducing the amounts of unhealthy calorie-laden food that children and adults consume. People would have to run for miles to use up the calories contained in some products.