Opioid prescriptions and abuse
Increased traffic deaths + road rage incidents (https://www.nhtsa.gov/press-releases/early-estimates-first-quarter-2022)
Deaths of despair + suicides (Many sources and discussions about this)
Lack of access to basic health care (lack of access to abortion will contribute here soon)
Obesity and fast food (self-explanatory)
Alcoholism from being bored during the pandemic (https://news.harvard.edu/gazette/story/2022/01/covid-related-drinking-linked-to-rise-in-liver-disease/)
(edit) and of course COVID-19 related deaths and illness
I mean there are just so many factors going against us, and either neglect or disagreement on how to solve these problems. On the left you have people who are suggesting that being obese is ok (it's not, it's a health problem, doesn't mean you need to be ashamed or be insulted though) and on the right, well, that speaks for itself.Similar to global warming, though, the solutions for these problems are technocratic and unlikely to generate any sort of broad public support or acknowledgement in the sense that people vote for candidates based in something like advocating for decreasing traffic fatalities. So long as partisans continue to bicker and worship ridiculous ideological positions we won't have any pragmatic solutions or attempts to mitigate these problems because the technocrats can't function in an environment where ideological purity and populism are the currency instead of facts and solutions.
None of these will cause a downfall of America or anything, we're just going to be a bit more, eh, chaotic?