What's Different About Our Food Today?

Some say that we have always been exposed to poisons and toxic sprays.
Yes, years ago we were exposed to DDT, asbestos and lead but not on the level and frequency that we experience toxins and adulterated food today.  Most people still had home cooked food and there were many small farms that grew decent food.  
We now have fructose in everything instead of sugar and poorly grown food, from huge corporate farms that care only about profits, that is preserved with massive amounts of toxins and preservatives.  Today food is produced for their wealth, not your health.  GMO foods were created to withstand huge amounts of herbicides and still thrive and produce profits - they weren't created to make us healthier.  
Antibiotic use in animal production is used to allow overcrowding and make animals fatter, again, for more money.  
All these "tricks" to produce faster more profitable food has had a negative impact of the health of U.S. citizens.  Collectively the unnatural food and toxins we are exposed to have caused incurable diseases today because the illnesses are due to our system's inability to tolerate it.  
It is complex but if you eat natural food it is vary simple - we are of organic origins and require organic food.