We expect the doctor to gather the facts of our illness or problem and provide a physical solution. The fertility experts take a physical approach, dealing with hormone imbalances, blocked fallopian tubes, mucous problems, sperm that doesn't move right, etc. Their solutions involve procedures with individual eggs and sperm. The separation of physical from spiritual aspects in medicine is also obvious in psychiatry. Depression is a chemical imbalance in the brain.
Extreme anxiety is a medical disorder with a medication solution.
Lying and stealing can be explained away in medical terms as a conduct disorder. Of course, these extreme examples many Christians can see through. Some problems, indeed, have physical explanations and physical solutions. A heart attack can be explained physically by a sudden loss of blood flow to a part of the heart muscle resulting from a gradual narrowing of the arteries, followed by a sudden blockage by a blood clot. Yet many medical problems are not that simple.