We no longer worry about dying from infectious diseases as we did in 1900.

But we increasingly suffer from chronic non-communicable diseases because of 

1. Overconsumption of the wrong foods e.g.,
- Sugar
- Seed oils
- Processed meats
- Refined/processed foods

 2. Reduced levels of healthy activities, e.g.,
- Exercise
- Sunlight exposure
- Sleep

These age-related illnesses are largely preventable through changes in our diet & lifestyle.