Yes, as many pointed out there are multiple factors, diet and such, but the point of this article was stress and people don't want to hear it because it means they need to change some things in their head. Much stress is self induced. Medium is a tsunami of people stressed over politics (identity (the victim Olympics) and the elected jerks). None of that mental turmoil changes a thing but it gives a ton of stress. But people don't want to give up those stressors.