IMO, exercise, or lack thereof, isn't the main driver of rampant obesity and chronic disease in western world. Improper nutrition is. It drives metabolic disease. Metabolic syndrome is the modern diagnosis of this modern 'disease'. It drives obesity, heart disease, some cancers, type 2 diabetes, Alzheimers (aka type 3 diabetes), fatty liver, PCOS, and much more. Metabolic syndrome is diagnosed when patient has 3 or more of the following:
1) Low HDL cholesterol
2) Elevated triglycerides
3) Elevated weight (waist/height ratio > 0.5x)
4) Elevated fasting blood glucose
5) Elevated blood pressure or taking meds to lower it
Only 12% of Americans are metabolically healthy:
New research shows that an “alarmingly low” number of American adults are achieving optimal metabolic health, leaving the majority of people at increased risk for serious diseases.
www.healthline.com