Okay, and now just to close this, because I want to talk about future generations as well, I might say these medical advances would also help future generations as they get older.
Because they believe they've already reduced their calories, thinking: " I'm having a diet soda so I can have a large fry with my burger." But soft drinks can also age us.
But they also found in those countries that a relatively simple shift in attitude could have an outsized impact on longevity and joy overall as people get older.
That's why your muscles can start to atrophy if you don't use them for long enough, and why failing to stay active and learn new things can greatly increase the risk of developing dementia as you get older.