I agree, I feel chronic diseases due to bad lifestyle is going to be the single biggest cause of mortality unless we figure a way out of it. These things compound and don’t show up as cause for concern until early 30s/40s. You then are left with notions like treatments, management, and maintenance. Even if you end up living like this till 80 or 100, I don’t think you can have the same quality of life that you could have had if it weren’t for them.