Dr. Peter Grinspoon 

@drpetergrinspoon
Peter Grinspoon, M.D. is a primary care doctor at Massachusetts General Hospital, an Instructor in Medicine at Harvard Medical School, and has been a cannabis specialist for twenty-five years.
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Grinspoon on Drugs
By Dr. Peter Grinspoon
Doctors. Drugs. Unfiltered opinions. The unvarnished truth. These are things that are rarely if ever, seen together. Here you can find an informed, objective alternative to the medical party line. Join me.