An apple a day may not actually keep the doctor away, but if you think it will, the fruit stands a surprisingly good chance. More and more research is concluding that our mind regulates our bodies, our thoughts heal -- and sicken -- everything from damaged hearts to irritable guts. The emergent field is called psychoneuroimmunology and it's racking up some impressive results. The Chicago Tribune has the best rundown of the research I've seen, and the implications are pretty applicable to everyday ailments and illnesses. Well worth a read.
