Some 220 million people worldwide used cannabis at least once in 2021, according to the United Nations. Another report suggests that, in the United States, more people use cannabis daily than drink alcohol. Yet, research into the effects, benefits and risks of cannabis use remains severely underfunded. For example, one source suggests that, of the Can$111 million (US$81 million) spent by the provincial Cannabis Prevention and Research Fund in Quebec, Canada, in 2022–23, less than Can$6 million was allocated to research.
