People have more chronic issues because they are living longer.

To follow that: Genetic changes that have a short term advantage & a long term disadvantage, it's going to be selected for. Evolution stops caring as soon as you've got your child to child bearing age.

Yeah exactly. I probably have some form of rheumatism and fertility issues. Since forever I have avoided my country’s traditional bread based lunch and instead microwaved leftovers in plastic containers. I feel bad about that. I also heated baby formula in plastic bottles. No bpa but it turns out: still bad.

Netherlands: besides one friend of a friend with an autoimmune disease, I'm not aware of chronic health issues in anyone else under 70 years old. Unless you count things like obesity, autism, or often having a headache at the onset of menstruation. Only among my grandparents (>70yo by now), it's indeed common to have something like a wound that doesn't heal or memory issues.

Maybe my value is under the statistical average, but "almost everyone I know"? That sounds very odd as well. Do you know of a genetic-related issue in the family, or do you live in a place where vaccinations are not available or mistrusted or so?