Older Veterans May Be at Risk for Cannabis Use Disorder

Research on cannabis use disorder (CUD) has mainly focused on individuals aged < 65 years, but a recently published study in JAMA Network Open found one-third of older veterans who had used cannabis in the previous 30 days screened positive for CUD.

The cross-sectional study of 4503 veterans aged 65 to 84 years from the US Department of Veterans Affairs (VA) Cannabis and Aging Cohort found 57% of participants reported lifetime cannabis use, with 29% citing medical reasons, usually for pain management. About 10% reported using cannabis in the previous 30 days, with 52% reporting use for ≥ 20 days in a month. The odds of CUD were higher among men, respondents aged < 76 years, individuals with anxiety, and individuals who reported any illicit drug use or frequent cannabis use.

In 2019, 9.8% of veterans reported using cannabis in the previous year. In 2019 to 2020, > 20% of veterans aged 18 to 44 years said they had used cannabis in the previous 6 months. According to VA Health Systems Research, about 1 in 11 veterans had used cannabis in the previous year. Compared to the general US population, recent cannabis use was similar or slightly lower among veterans. Among those with previous year use, however, the percentage of veterans using cannabis for medical purposes was more than double that of the general population.

Older veterans are particularly at risk for CUD. Cannabis use can increase the chance of neuropsychiatric disorders, respiratory symptoms, and cardiovascular outcomes—all leading causes of death in older adults. They also have an elevated risk of suicidal ideation and therefore may be particularly susceptible to adverse effects of cannabis, even if used for therapeutic purposes.

In addition to CUD, older veterans may be at risk for tetrahydrocannabinol (THC) intoxication if they are unable to tolerate cannabis potency or the latent THC components found in products marketed as only having cannabidiol. THC is the primary psychoactive compound found in the cannabis plant and interacts with brain cannabinoid receptors to affect mood, perception, and various bodily functions. Cannabis potency has increased from about 3% in the 1980s to about 15% in recent years; the average THC-to-CBD ratio has increased substantially over the past decade.

Unlike veterans aged 18 to 25 years, those aged ≥ 65 years are less likely to use recreational cannabis, are more likely to use medicinal cannabis recommended by a health care professional, and report use for pain management, insomnia, and mental health (including posttraumatic stress disorder [PTSD]). Some research indicates that rates of cannabis use and CUD are particularly elevated among veterans with PTSD and major depressive disorder who may use cannabis as a means of coping with negative affect and sleep disturbances. PTSD is recognized as a qualifying condition by states that have legalized medicinal cannabis. 

Sleep disturbance, especially in conjunction with PTSD, is associated with CUD among veterans. According to the VA, research does not support cannabis as an effective PTSD treatment, a reason the 2023 VA/DoD Clinical Practice Guideline for PTSD does not recommend it for that use. In 2020, lifetime prevalence of CUD among veterans was 9.2%; the prevalence of past-6-month CUD diagnoses among veterans was 2.7%. Among veterans with PTSD, however, CUD rates were much higher (12.1%).

Current VA guidelines recommend that patients with CUD be offered referral to mental health services for evidence-based treatments, including motivational interviews, contingency management, and cognitive behavioral therapy. The JAMA Network Open study notes the importance of screening and informing older veterans about the risks of cannabis use: “Unidentified, patients cannot be offered existing evidence-based treatments. Despite increasing cannabis use among older adults, there is an inadequate evidence base on therapeutic benefits and potential harms from cannabis use among older people.”

Research on cannabis use disorder (CUD) has mainly focused on individuals aged < 65 years, but a recently published study in JAMA Network Open found one-third of older veterans who had used cannabis in the previous 30 days screened positive for CUD.

The cross-sectional study of 4503 veterans aged 65 to 84 years from the US Department of Veterans Affairs (VA) Cannabis and Aging Cohort found 57% of participants reported lifetime cannabis use, with 29% citing medical reasons, usually for pain management. About 10% reported using cannabis in the previous 30 days, with 52% reporting use for ≥ 20 days in a month. The odds of CUD were higher among men, respondents aged < 76 years, individuals with anxiety, and individuals who reported any illicit drug use or frequent cannabis use.

In 2019, 9.8% of veterans reported using cannabis in the previous year. In 2019 to 2020, > 20% of veterans aged 18 to 44 years said they had used cannabis in the previous 6 months. According to VA Health Systems Research, about 1 in 11 veterans had used cannabis in the previous year. Compared to the general US population, recent cannabis use was similar or slightly lower among veterans. Among those with previous year use, however, the percentage of veterans using cannabis for medical purposes was more than double that of the general population.

Older veterans are particularly at risk for CUD. Cannabis use can increase the chance of neuropsychiatric disorders, respiratory symptoms, and cardiovascular outcomes—all leading causes of death in older adults. They also have an elevated risk of suicidal ideation and therefore may be particularly susceptible to adverse effects of cannabis, even if used for therapeutic purposes.

In addition to CUD, older veterans may be at risk for tetrahydrocannabinol (THC) intoxication if they are unable to tolerate cannabis potency or the latent THC components found in products marketed as only having cannabidiol. THC is the primary psychoactive compound found in the cannabis plant and interacts with brain cannabinoid receptors to affect mood, perception, and various bodily functions. Cannabis potency has increased from about 3% in the 1980s to about 15% in recent years; the average THC-to-CBD ratio has increased substantially over the past decade.

Unlike veterans aged 18 to 25 years, those aged ≥ 65 years are less likely to use recreational cannabis, are more likely to use medicinal cannabis recommended by a health care professional, and report use for pain management, insomnia, and mental health (including posttraumatic stress disorder [PTSD]). Some research indicates that rates of cannabis use and CUD are particularly elevated among veterans with PTSD and major depressive disorder who may use cannabis as a means of coping with negative affect and sleep disturbances. PTSD is recognized as a qualifying condition by states that have legalized medicinal cannabis. 

Sleep disturbance, especially in conjunction with PTSD, is associated with CUD among veterans. According to the VA, research does not support cannabis as an effective PTSD treatment, a reason the 2023 VA/DoD Clinical Practice Guideline for PTSD does not recommend it for that use. In 2020, lifetime prevalence of CUD among veterans was 9.2%; the prevalence of past-6-month CUD diagnoses among veterans was 2.7%. Among veterans with PTSD, however, CUD rates were much higher (12.1%).

Current VA guidelines recommend that patients with CUD be offered referral to mental health services for evidence-based treatments, including motivational interviews, contingency management, and cognitive behavioral therapy. The JAMA Network Open study notes the importance of screening and informing older veterans about the risks of cannabis use: “Unidentified, patients cannot be offered existing evidence-based treatments. Despite increasing cannabis use among older adults, there is an inadequate evidence base on therapeutic benefits and potential harms from cannabis use among older people.”

Research on cannabis use disorder (CUD) has mainly focused on individuals aged < 65 years, but a recently published study in JAMA Network Open found one-third of older veterans who had used cannabis in the previous 30 days screened positive for CUD.

The cross-sectional study of 4503 veterans aged 65 to 84 years from the US Department of Veterans Affairs (VA) Cannabis and Aging Cohort found 57% of participants reported lifetime cannabis use, with 29% citing medical reasons, usually for pain management. About 10% reported using cannabis in the previous 30 days, with 52% reporting use for ≥ 20 days in a month. The odds of CUD were higher among men, respondents aged < 76 years, individuals with anxiety, and individuals who reported any illicit drug use or frequent cannabis use.

In 2019, 9.8% of veterans reported using cannabis in the previous year. In 2019 to 2020, > 20% of veterans aged 18 to 44 years said they had used cannabis in the previous 6 months. According to VA Health Systems Research, about 1 in 11 veterans had used cannabis in the previous year. Compared to the general US population, recent cannabis use was similar or slightly lower among veterans. Among those with previous year use, however, the percentage of veterans using cannabis for medical purposes was more than double that of the general population.

Older veterans are particularly at risk for CUD. Cannabis use can increase the chance of neuropsychiatric disorders, respiratory symptoms, and cardiovascular outcomes—all leading causes of death in older adults. They also have an elevated risk of suicidal ideation and therefore may be particularly susceptible to adverse effects of cannabis, even if used for therapeutic purposes.

In addition to CUD, older veterans may be at risk for tetrahydrocannabinol (THC) intoxication if they are unable to tolerate cannabis potency or the latent THC components found in products marketed as only having cannabidiol. THC is the primary psychoactive compound found in the cannabis plant and interacts with brain cannabinoid receptors to affect mood, perception, and various bodily functions. Cannabis potency has increased from about 3% in the 1980s to about 15% in recent years; the average THC-to-CBD ratio has increased substantially over the past decade.

Unlike veterans aged 18 to 25 years, those aged ≥ 65 years are less likely to use recreational cannabis, are more likely to use medicinal cannabis recommended by a health care professional, and report use for pain management, insomnia, and mental health (including posttraumatic stress disorder [PTSD]). Some research indicates that rates of cannabis use and CUD are particularly elevated among veterans with PTSD and major depressive disorder who may use cannabis as a means of coping with negative affect and sleep disturbances. PTSD is recognized as a qualifying condition by states that have legalized medicinal cannabis. 

Sleep disturbance, especially in conjunction with PTSD, is associated with CUD among veterans. According to the VA, research does not support cannabis as an effective PTSD treatment, a reason the 2023 VA/DoD Clinical Practice Guideline for PTSD does not recommend it for that use. In 2020, lifetime prevalence of CUD among veterans was 9.2%; the prevalence of past-6-month CUD diagnoses among veterans was 2.7%. Among veterans with PTSD, however, CUD rates were much higher (12.1%).

Current VA guidelines recommend that patients with CUD be offered referral to mental health services for evidence-based treatments, including motivational interviews, contingency management, and cognitive behavioral therapy. The JAMA Network Open study notes the importance of screening and informing older veterans about the risks of cannabis use: “Unidentified, patients cannot be offered existing evidence-based treatments. Despite increasing cannabis use among older adults, there is an inadequate evidence base on therapeutic benefits and potential harms from cannabis use among older people.”