My then 16 y/o son had blood sent in for a cholesterol test for his school physical that year (family history of fatal heart attacks in males). His levels came back a little elevated. The docs first recommendation? "You should really consider placing your son on Lipitor." Lifestyle and dietary modifications were not even mentioned as a possibility. I tweaked our families diet (lower carb, moderate protien and healthy fats), my son tweaked his activity levels, and within six months all was well (and he had dropped back into a healthier weight/body fat range, as a bonus.)
Modern medicine is generally forced to treat the lowest common denominator with the solution that is simplest for the medical professionals to implement; hence the prevalence of prescriptions for potentially toxic medication, rather than more complex lifestyle changes.