As such they do not apply to those who do not own television stations or newspapers. Unfortunately, while the effect of a given law on a specific group of people can be predictable it can often produce strange effects on another group of people. This usually sets off a cascade of events that may or may not wind up in the law being altered or another law being written to modify the effect of the first law. If a person fits into a certain category then that law will directly affect them causing them to alter their behavior. Other people may never be bothered nor will their activity be changed by the presence of the law.
Hormones are like that.
Once released into the bloodstream they have wide-ranging effects depending on the cells in question. Some cells will respond to the hormones, others won't. Some actually enter the cell. You mentioned one hormone, Medroxyprogesterone Acetate. All steroid hormones work in the same fashion.