Is Cannabis Safe for Seniors?
According to federal health data, cannabis use among Canadians over 65 has increased meaningfully since legalization in 2018. Seniors are trying it for pain, sleep, anxiety, and general wellness — often for the first time in their lives. And they deserve straightforward information, not a conversation designed for a 25-year-old.
What's different about cannabis for seniors
Several physiological factors make cannabis use in older adults meaningfully different from use in younger adults:
Changed body composition: Older adults typically have more body fat and less muscle mass. Since THC is fat-soluble, it can accumulate differently — potentially leading to longer duration and stronger effects.
Slower metabolism: Cannabis is processed more slowly as we age. What takes a younger person two hours to metabolize might take significantly longer for an older adult.
Medication interactions: Seniors are disproportionately likely to be on multiple prescription medications. Cannabis — particularly CBD — can interact with blood thinners, blood pressure medications, sedatives, and others.
Balance and fall risk: THC can affect coordination and increase dizziness, which is a serious consideration for older adults. Falls are one of the most significant health risks for people over 65.
Cognitive sensitivity: Older brains may be more sensitive to THC's cognitive effects, including short-term memory impairment and confusion. This is particularly worth noting for anyone with early cognitive changes.
What seniors most commonly use cannabis for
Pain — particularly arthritis, neuropathic pain, and chronic pain that hasn't responded well to other treatments
Sleep — insomnia is common in older adults, and cannabis (especially CBD-dominant products) is increasingly used for this
Anxiety — particularly in those dealing with health-related anxiety or life transitions
Appetite — for those dealing with reduced appetite related to illness or treatment
Safer approaches for seniors
Start with CBD-dominant products. High-CBD, low-THC products offer potential benefit with fewer of the risks associated with THC. A 10:1 or 20:1 CBD:THC ratio is a reasonable starting point.
Use the lowest dose available. Whatever the label's starting recommendation, consider starting at half.
Avoid smoking. Older lungs deserve protection. Oils, capsules, and gummies are preferable.
Talk to your doctor or pharmacist first. This is essential, not optional, for older adults on existing medications.
Don't use cannabis and then get up quickly. Dizziness and orthostatic hypotension (a drop in blood pressure when standing) are real risks.
Mary Jane says: "Older adults aren't a special category to be afraid of — they're people who deserve accurate information and a little extra care with dosing. Go slow, start small, and please, talk to your pharmacist first."
A note for family members
If you're reading this on behalf of a parent or grandparent: your concern is valid, and so is their curiosity. Help them have the right conversation with their pharmacist or doctor rather than either dismissing the idea or assuming it's automatically fine.
The Ask Mary Jane membership includes resources specifically written for older adults new to cannabis.
