1947 vintage reporting for duty!
I suppose from a lower-middle-class background - dad was a schoolteacher, that being the first step up the ladder - a keen gardener, with a large allotment and a greenhouse, and mum was a excellent cook, as well as being that unusual thing - a working married woman, and mother, in the 1940s and 50s.
We seemed to eat and eat and
eat. My aunts on both sides of the family seemed to be in perpetual competition with each other as to who could put the greatest amount of food on the table and which of my cousins could eat the most - yet none of us were fat; I had one cousin who was referred to as a 'bonny lass' until the age of about 9 when a growth spurt saw her rapidly change into a skinny-ma-link! My two boy cousins were said to have 'hollow legs' - where else did all the food they ate, go? Cooked breakfasts, elevenses, hot dinners, cooked teas, suppers ...
We were undoubtedly much more active in all sorts of obvious, and not so obvious ways and access to junk food much more restricted. Shops were open very restricted hours; even those children who had the money, couldn't buy sweets, crisps and fizzy drinks if the shop was closed, could they?
If anyone doubts that 'real' food is lots,
lots cheaper than 'fast' food, they need to have a look at the blog
https://cookingonabootstrap.com/
But of course to cook 'real' food, you need to (a) know how and (b) have a minimum of equipment to actually do it.
A kilo of potatoes is cheap, but if you don't have a pan and a hob at a minimum, you're still going to go hungry ...