Do we have increasing incidence of diseases? [citation needed]
I see little reason for evolution to favor long lives. Setting offspring early and living long enough to support your offspring sure. But beyond that returns are quickly diminishing.
The idea that it's natural to live a long healthy life is very romantic, but hardly realistic.
Even if the numbers did increase, most of the time this is due to improved detection, or shifting age distributions, ie. an older population will necessarily have more health issues.
Is exactly the term I was looking for :)
I feel like some of the love people have for: natural medicine, organic food, natural coloring, flavors and preservatives are somewhat similar... Granted there are environmental benefits to some of it for sure.
Other than what you say about older people, it is pure conjecture to say that "most of the time" these are the causes.
It's quite possible that diseases suspect of being due to vitamin D deficiency are up, but evidence to that effect needs to be cited.
I'm not convinced that we have higher incidence of diseases today, than we did 50 years ago. At least not when you correct for age, and population size, etc. Maybe diabetes is up, but... still evidence is good.