druglibrary.org

Zp964 TIL Dr. Sigmund Freud was addicted to smoking and failed to quit for good throughout a 45 years long battle that included 33 operations for cancer of the jaw, an artificial jaw replacement, and attacks of "tobacco angina" exacerbated by nicotine . He was known to smoke up to twenty cigars a day.
xGW0 TIL the median lethal dose (LD50) of marijuana is estimated (at the low end) at 1:20,000. This means a person would have to smoke around 15,000 pounds of marijuana in about 15 minutes to die from it.
wOn7 TIL, Dr. James C. Munch testified in court, under oath, that he had smoked marijuana, and it turned him into a bat. Dr. Munch was the “official expert” on marijuana for the U.S. government from 1938 to 1962