I highly doubt that doctors would push cholesterol drugs if the patient has no need for it. There is always an issue of side effects which could be liver damage for one and patients who are on cholesterol medication have to be monitored by blood tests. So no neither patients nor doctors would agree to do that just in case or for slightly elevated levels. A doctor would first recommend exercise and fish oils.
As far as medications for high blood pressure, that is also not the first defense. A doctor would also first recommend a change in diet, exercise, stress alleviation, etc. The doctor would also have to be monitoring that patient for High Blood pressure. In other words, it would have to be a series of visits that show that each time the patient came in, the pressure was high and the patient had headaches, etc. If the patient could not bring the pressure under control by themselves and there was no change at the next visit, which the doctor might have recommended be two weeks later to check, then the doctor might suggest medication because it should not be left untreated.
Doctors are walking a very fine tightrope since everything they do is scrutinized and could be reason for a malpractice suit or investigation. Medicate and that could be a problem. Don’t medicate and that could be a problem. Refer out and that could be a problem with the insurance company, don’t refer out and that could be a problem with malpractice. Doctors are not pill pushers and they are NOT playing games with the lives of their patients.
Again I say a patient has to be an educated consumer. Find a doctor you can trust and ask question. You have to be THE advocate for your own good health and welfare, the doctor is only a member of your team.