Patterns of Medical Cannabis Use Among Older Adults from a Cannabis Dispensary in New York State.

Background

Cannabis use has increased among older adults. Few epidemiological studies have examined the medical diseases reported for cannabis use, routes of cannabis administration, and methods of consumption among older adults, and how they differ from younger adults.

Methods

We analyzed invoice data on purchases of cannabis products from a large medical cannabis dispensary in New York State between January 1, 2016 and December 31, 2017. Data came from n=11,590 patients stratified by ages 18-49 (n=4,606), 50-64 (n=3,993), and ≥65 years (n=2,991). We assessed differences in groups by demographic characteristics of patients, qualifying conditions and symptoms for cannabis use, cannabis product dosing of THC and CBD, THC:CBD ratios, and cannabis delivery methods.

Results

Among cannabis patients, 25.8% were aged ≥65 years, and 34.5% were ages 50-64. Across all age groups, severe or chronic pain was the predominant symptom for cannabis use, although older patients were more likely to use cannabis for cancer and Parkinson's disease among other conditions. Older adults were more likely to use sublingual tincture versus other consumption methods, to use products with a lower THC:CBD ratio, and to begin cannabis treatment with a lower THC and higher CBD dose compared with younger age groups. However, all age groups demonstrated a similar increase in THC dosing over time.

Conclusion

Analysis of medical cannabis invoices from a dispensary in New York State showed that although there are similarities in patterns of cannabis use across all groups, there are key characteristics unique to the older adult medical cannabis user.