[belorn]

Acute and chronic stress causes, among other things, increased risk for high blood pressure and holds key roles of inflammation and the immune system. Cortisol is even involved in increasing cholesterol. Stress management is a very real part of any heart disease recovery.

For diabetes: https://spectrum.diabetesjournals.org/content/18/2/121 and https://www.ncbi.nlm.nih.gov/pubmed/1425110

Stress has a major effects on metabolic activity, weight gains, effects hormones and is generally a problem in managing glucose levels. Stress management a key part of diabetics health plan.

In general there is few things as deadly to a human as chronic stress and that is what a lot of studies in longevity shows.

[vfc1]

Look I'm not saying that stress does not play any role at all, but obviously the main cause is diet.

I mean put people on Yoga classes and don't change their diet and see what happens.