This is something we see all the time, and often this is labeled as “ empirical therapy “ , and is justified based on the fact that "I've tried it with my patients and it's worked."
There are two reasons why doctors get fooled.
The first is the placebo effect. Just the fact that the doctor thinks the treatment will work convinces the patient that the it will , and this becomes a self-fulfilling prophecy !
The second reason is that doctors don't like doing nothing, which is why they feel it's better to do something rather than nothing. This is what patients expect as well, which why doctors are so happy to write prescriptions , even when the usefulness of these prescriptions is still unproven.
A great example for this is all the Vitamin D supplementation which is being routinely prescribed to everyone , without any proof of benefit !
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