We are living longer but not healthier for one reason: because the medical system has figured out how to keep people from dying in the later years of life through advanced treatments. So in other words, people aren't really living a healthy life longer; they are just dying longer.
For example, my father-in-law is 78. About 12 years ago, he had open heart surgery to get a couple of bypasses done. And since that time he's had skin cancer removed many times, he's had his gallbladder removed, and he's scheduled to have cataract surgery this week.
My mother-in-law is 59 and has stage 4 cancer. In fact, she's had it for many years. It spread throughout her intestines and started to affect other organs as well. She's had multiple surgeries, and most recently she had a "chemo bath", which is a procedure where they basically powerwashed her intestinal tract with a chemotherapy cocktail instead of giving it to her through the bloodstream. It was an absolute nightmare for her to go through. She also had her gallbladder removed, and gets treated regularly for things like sciatica nerve pain, high blood pressure, insomnia, etc. And the list goes on and on of problems that are directly related to her obesity.
Through all of that drama, neither one of my in-laws have ever tried to overhaul their diets or God forbid, actually try to exercise. A sedentary lifestyle combined with fast food, pizza, cookies, burgers, fries, ice cream, and every other junk food in the book are all part of their weekly routine. Not a day goes by that they don't complain about some new ailment, pain, or upcoming medical procedure they have to go through, and it's been like that for 20 years. Doctor's appointments are on the books every week for something.
They both would be have been dead a long time ago had all these medical treatments not existed. But the reality of it all is that they don't live joyful or healthy lives. In fact, it's just the opposite. Their lives are like this excruciating, drawn-out death process plagued with time-consuming doctor visits, painful surgeries, expensive medications and non-stop side effects that creates a dismal merry-go-round that just won't end.