Cannabis use among seniors is growing and there is no stopping it. Specifically, with the rise of medical (and recreational) cannabis legalisation comes soaring demand for cannabis-based products among people who fall into the senior age group.n fact, a survey published by Science Daily on October 7, 2020 concluded that of 568 senior respondents, 15% had consumed cannabis within the past three years. Approximately 50% of older surveyed cannabis consumers also reported using the plant on a regular basis for medical reasons.