The past generation, people eat foods that they produce/make themselves.
But now most people eat fast food which make them have risks of diseases.
People in the city eat more fast food. Unhealthy people require medical
treatments. Rural people plant their own vegetables and so they are
healthier.
Evolution changes our food culture and eating habits. You must learn to grow
your own vegetables.
In US, the food culture has changed, most of the population eat fast food
and soft drinks. They are bad for health. But healthy food such as fruits and
vegetables are good for you.
Nowadays, fast foods influence our living. So the local foods have been
forgotten.