AI itself won’t for (as of now at least) solve these issues by itself, but it will be a tool to further push these fields forward and accelerate progress. Research on longevity for instance has been going on for decades already so it’s not something “new” that AI will just solve. I recommend the podcast London futurists if you want to listen to some great interviews on all the topics you mentioned. It’s a very small podcast, but the content is top tier.