Rent and watch the documentary "Food, Inc." (inspired by Michael Pollan's books)
Total corporate control of our nation's food supply from seed to market to table is literally poisoning us - worse than even the tobacco industry. It is even infiltrating and contaminating the world's food supply.
At the very least boycott anything made by Monsanto, Dyson, Smithfield. Anything containing high-fructose corn syrup or made with any kind of soybean product - and any man-made, processed food in general. Stop drinking all soda and sweetened juices.
If you can, stop shopping at huge supermarkets - except those that offer legitimate organic choices (like Walmart).
Stop feeding your kids fast food. Any kid born after 2000 has a 1 in 3 chance of developing diabetes.
And don't depend on the USDA or FDA to defend your health - they're run by ex industry scumbags. Use your own sense and bring these corporate food "suits" down!