Proper nutrition is an important part of good health.
This page will provide information to help you make informed decisions. While I believe this may have been true over 50 years ago, I have serious doubts about the validity of the above statement at this time. The quality of the soil has a large effect on the amount of nutrients found in produce, grains, etc. Soil that is tired and full of chemicals is probably nutrient deficient. The widespread use of petrochemical fertilizers has increased crop yields in the short term but is causing other concerns.