Yet the FDA continues to approve drugs that treat symptoms and not the underlying problem. It also continues to approve drugs that have long term deleterious effect.
Here's an excerpt from this FDA document: "Many medical conditions are complex; targeting a single component of a condition cannot be presumed to have a positive effect on the patient unless there is objective clinical evidence. This array of unexpected results from phase 3 studies demonstrates the complexity of the interaction between a medical product and the patient, and how logical presumptions without corroborating clinical evidence can be unreliable."