Judging by the median quality of life (rat race, anybody) and the obesity epidemic (and related diseases), neither "happy" nor "healthy" seem to be objectives and it looks a lot more like it's just "alive and energized enough to work".

Industrial Food (and that includes the Intensive Farming and Cattle Rearing side) in the US is particularly bad at the healthy part, and even in countries with better food regulations the industrial stuff (and again that includes the products of intensive farming and livestock ranching) is still significantly worse in that sense than the non-industrial kind but at least they don't shove corn so hard that it adds up to over 70% of the human food chain directly and indirectly like in the US.

Not that I'm saying that the World can sustain this big a population without intensive farming. I'm just disputing that the modern version of it even tries to have "happy" or "healthy" as objectives, much less have succeeded in achieving either.