More and more older people are using cannabis to soothe the pains, diseases, and mental health problems that come with ageing.

A new study suggests that even though people over age 65 are the fastest-growing population using marijuana, they come up against many barriers when trying to access it.

More and more older people are turning to cannabis for their ailments, because it can soothe the symptoms of problems like arthritis, Parkinson’s, and chronic pain. A new study suggests that the number of people using marijuana is increasing faster for those aged over 65 than for any other age group, but they come up against many barriers when trying to access it.

“Older Americans are using cannabis for a lot of different reasons,” said Hillary Lum, an assistant professor of medicine at the University of Colorado School of Medicine and coauthor of the study. “Some use it to manage pain while others use it for depression or anxiety.”

But the study, published this month in the journal Drugs & Aging, found that a lack of research, unclear communication with doctors, and a reluctance to be honest about its use due to stigma, are all stopping older people getting the products they need.

Researchers interviewed 136 people over the age of 60 in 17 focus groups across 13 counties in Colorado, and found that older people don’t always feel comfortable asking for a medical marijuana license from their doctors. This pushes them towards buying from the black market instead.

“I think [doctors can] be a lot more open to learning about it and discussing it with their patients,” said one respondent. “Because at this point I have told my primary care I was using it on my shoulder. And that was the end of the conversation. He didn’t want to know why, he didn’t want to know about effects, didn’t want to know about side effects, didn’t want to know anything.”

Other respondents said their doctors refused provide them with the certificate required for obtaining medical marijuana, and they suspected it was because they weren’t educated on the latest research.

Cannabis products can be an important alternative treatment for many older people, who are often taking many different types of medications that can have unpleasant and harmful side effects.

“From a physician’s standpoint this study shows the need to talk to patients in a non-judgmental way about cannabis,” said Lum. “Doctors should also educate themselves about the risks and benefits of cannabis and be able to communicate that effectively to patients.”