In a fascinating experiment — on himself

For the last three years, Dr. Greene has eaten nothing but organic foods, whether he’s cooking at home, dining out or snacking on the road

He chose three years as a goal because that was the amount of time it took to have a breeding animal certified organic

he was inspired to go all-organic after talking to a dairy farmer who noted that livestock got sick less after a switch to organic practices. He wondered if becoming 100 percent organic might improve his own health

Three years later, he says he has more energy and wakes up earlier. As a pediatrician regularly exposed to sick children, he was accustomed to several illnesses a year. Now, he says, he is rarely ill. His urine is a brighter yellow, a sign that he is ingesting more vitamins and nutrients

The biggest surprise of the whole experience, he says, was that many people still don’t know what “organic” means