Pintohoo
You maybe overlooking the great advances since 1900 onwards in all fields of science that has allowed us to extend our lives so long.
Antibiotics
Abundance of food
Warming
Lighting
Optical aids
Medicines
Sanitation the list rolls on and on
What hasn't changed is our biology. Eating foods our body was adapted to eat over tens of thousands of years must be better for us than artificial creations.
Fad diets no. Normal natural foods yes.
