Researchers affiliated with the New York School of Medicine assessed trends in self-reported cannabis use among seniors. They reported that 4.2 percent of seniors acknowledged engaging in past-year cannabis consumption in 2018, up from 2.4 percent in 2015 and 0.4 percent in 2006.
The study's findings are consistent with those of prior papers similarly reporting an uptick in marijuana use among older Americans. According to a 2019 study published in the journal Gerontology & Geriatric Medicine, marijuana use among seniors is associated with self-reported improvements in pain management, day-to-day functioning, and in their overall health and quality of life.
Full text of the study, "Trends in cannabis use among older adults in the United States, 2015-2018," appears in JAMA Internal Medicine.