@FlappingMadly I agree completely, it is not possible to eat the same 'healthy' diet in the way it was in the past, because even most of the basic ingredients like meat, wheat, vegetables are grown to be less healthy and more superficially attractive, and this affects the nutrients in them.
In my childhood, our home-grown carrots or those from the grocer were small, hard and not that sweet- now carrots are huge and very sweet (and more carby sugar as a result).
Chickens are now fattier even the breast meat, as they are not running around, even the free-range ones are not for the most part (research shows this).
Eggs have a weird texture that I haven't got to the bottom of, more glutenous whites, not the same although I still eat loads of them as I think they are nutritious.
Vine grown tomatoes are pretty similar, but the watery large ones aren't, same with apples.
Ultimately unless you are shopping in a very very expensive farm shop for everything, and hand making your stock, pasta, from scratch, your diet won't be what it was all those years ago. There's lots of research on it.
Those who smugly say- well don't eat processed food, I agree that UPC is the work of the devil, but it's about 50% of what babies and toddlers eat now, and the other 50% is not as nutritious as it would have been in the past.
I feel very angry that we are overweight through horrible overprocessed food industry food that is not good for us, and it's become the norm for 99% of households. Men aged 55-65 80% are overweight or obese. Once you start to get to those type of figures, it's clearly not about willpower, it's about a very unhealthy obesogenic lifestyle that we now live that is almost impossible to counter.