A new study shows increased marijuana use among U.S. adults, especially among men, according to a Nov. 29, 2016, press release from Columbia University’s Mailman School of Public Health.
Researchers compared 2002 data with 2014 data and found 4 million more women and 6 million more men had partaken of marijuana within the past year.
Until 2007, researchers noticed, marijuana use stayed at a fairly consistent rate of about 13 percent of U.S. adult males and 7 percent of U.S. adult females. After 2007, about 4 percent more men and 3 percent more women reported using marijuana.
“These changes parallel national trends in decreased perceived harmfulness of marijuana use, and legalization of both recreational and medical use in over half of U.S. states,” Dr. Hannah Carliner, co-author of the study, said. “However, changes in attitudes and legality do not sufficiently explain why we observe a sharp increase in use in 2007, or why this increase was greater in men than in women.”
Income level provides an additional distinction within the data on adult marijuana use. Between 2007 and 2014, researchers also noticed a 6 percent increased in adult males using marijuana in households earning $20,000 per year or less, compared to a 2 percent increase among women in the same income bracket.