Well no. There are other factors. Increased medical advantages mean that the cost of treatments and drugs keeps increasing Improved medical advances, including neo natal care, means more people are surviving with expensive conditions ( which has a huge impact on social care too). People are living longer which means they need medical treatment for longer.
We are also a very unfit and obese society, which is partly an individual responsibility, but also due to people living busy lives working full time and looking after kids with reduced support structures and increased workload ( kids don't run free range and entertain themselves anymore), as well factors to do with design of communities etc. Cancer rates are increasing for reasons no-one is quite sure of, with cancer rates now at a terrifying one in two instead of one in three. and many cancer rates increasing in younger age groups.
Kids are less fit and more overweight. I was genuinely shocked at the weekend when I was at an activity centre I sometimes go to, and there was a bunch of 10 year old boys there. Only one had the high level of physical capability and mastery over his body I would expect of kids that age and quite a few had poorer physical skills than me (and I am in my early 50s). All of those kids should have been able to kick my ass, no effort. These kids live in an affluent area surrounded by woods and nature and hills, but they aren't playing in that environment to acquire those skills or capability in the way kids were in my generation. Its actually quite concerning for what that means for future health of the country.