@Linkat,
Geez Linkat. One can do both, you know? Just because I drink tea when I have a cold doesn't mean I won't seek medical attention when I break a bone or have blood coming out of my ear. What's wrong with both talking to a doctor and using a placebo.
Placebos have been scientifically shown to improve a number of medical problems from headaches, to cold symptoms to erectile dysfunction.
When I was in Guatamala, I stayed with a doctor working with the Kiche indigenous people. They had a clinic. The people came expecting treatment even when there was no treatment was medically indicated. The doctors learned that they had to provide a bottle of vitamins to each patient with strict instructions on how they were to be taken.
The vitamins had no medical value, they were placebos. There was no cultural understanding of medical ethics... or what was expected of a doctor. There was a discussion among the medical people about whether this was ethical, the argument was that it improved the well-being of the people being served.