......."why dont docs today know this stuff". In my very humble opinon healthcare today is a assembly line approach. Practically all ailments have a one size fits all solution....ex:...statins are prescribed like they are jelly beans, the results..just google lipitor and start reading...many hypertension meds cause depression...go to the doc and what do you get?..an anti-depressant...most docs can hardly keep up with the latest and greatest miracle drug ,let alone devote time to the vitamin and mineral needs of a patient, ( and some wouldnt know where to start). I dont blame the physician entirely , in many instances the safest route is taken to avoid the lawyers who want to sue the poor schmuck out of business. B-12 ? the doc looks at the labs sees a 550 and says "you're ok", well there are a lot of studies ( scientific) that say you're not ok at that level. Many of these meds deplete critical vitamins and minerals and docs spend precious little time studying this end of the eqaution.Tank god for the internet!!! (or was it Al Gore)?