In recent years medicine has increasingly recognized a connection between mind and body and how the interaction between the two can affect our health. But in its effort to avoid a problematic separation between mind and body, medicine has been led astray. Due to misunderstanding what in philosophy is called mind-body dualism, trained medical doctors end up over-diagnosing conditions as psychosomatic, automatically construing medically unexplained symptoms as psychiatric problems. This is a philosophical error that ends up putting the health of patients at risk, argues Diane O’Leary.

Medicine and philosophy have an uneasy relationship.  Medicine is a practical endeavor, aiming for concrete results.  Philosophy, on the other hand, has been construed as a head-in-the-clouds kind of thing since antiquity.  Today, outside of medical ethics (which has taken a rightful place within the profession), it’s hard to see how philosophy’s abstractions could make a real difference to the nuts and bolts of diagnosis and treatment.

If medicine were just an applied science of the body, all of this would make good sense.  But in the late twentieth century, western medicine reconsidered its exclusive focus on the body and emphatically rejected it.  Patients, it turns out, are not just bodies, we’re people.  And persons have minds, as well as bodies. This shift raised one modern philosophy’s most intractable issues: the mind-body problem: How do our subjective, mental experiences relate to our objective, physical bodies?

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