Sorry Adam not true
Most blood pressure problems are idiopathic which means there is no specific cause, although doctors will always be a bit more interested in younger people with high blood pressure in case there is a cause such as kidney disease or narrowing of certain blood vessels or endocrine issues.
In most others reducing salt and losing weight often drops the blood pressure, but not always - some people with high blood pressure are already living a healthy life. Doctors also tell people to exercise and stop smoking but these don't drop blood pressure they just make you live more healthily
If your blood pressure is still raised you do need drugs. Side effects are limited and the actual drugs can be varied, but it is clear that controlling otherwise high blood pressure prevents early death from heart attacks and strokes and the benefits outweigh the risks. Of course the odd person may get complications, and may well post on this thread, but the medical profession is interested in the overall population and most patients are helped