SAN FRANCISCO. He became a stoner cultural icon in 1978 with “Up in Smoke,” the first of a lucrative series of Cheech & Chong movies that comically celebrated pleasures of pot during a wholly ...

Users of marijuana had statistically higher levels of lead and cadmium in their blood and urine than people who do not use weed, a new study found. “Compared to non-users, marijuana users had 27 ...