Statistics Canada has conducted a series of web panel surveys on a regular basis, as part of the Canadian Perspectives Survey Series, to see how Canadians are reacting to the pandemic. Of those who had previously consumed alcohol, nearly one-quarter (24%) said their consumption had increased during the pandemic, while almost as many (22%) said their consumption had decreased. Of those who had previously consumed cannabis, more than one-third (34%) said their consumption had increased during the pandemic. Respondents indicated that stress, boredom and loneliness contributed to that increase.
You can read the full report here: https://www150.statcan.gc.ca/n1/daily-quotidien/210304/dq210304a-eng.htm