Association of Endothelial Dysfunction With Chronic Marijuana Smoking and THC-Edible Use

Area of Science:

• Cardiovascular Research
• Endothelial Function Studies
• Cannabis and Health

Background:

• Legalization of recreational and medicinal cannabis has increased usage.
• Understanding the impact of cannabis on vascular health is crucial.

Purpose of the Study:

• To investigate the association between cannabis use and vascular endothelial dysfunction.
• The CANnabis: Does It Damage Endothelium (CANDIDE) study was initiated to explore these effects.

Main Methods:

• A cross-sectional study involving healthy adults aged 18-50, divided into marijuana smokers, THC-edible users, and non-users.
• Measurements included arterial flow-mediated dilation (FMD) and pulse wave velocity (PWV).
• Endothelial nitric oxide production was assessed using human umbilical vein endothelial cells (HUVECs) exposed to participant sera.

Main Results:

• Marijuana smokers and THC-edible users exhibited significantly lower FMD compared to non-users.
• VEGF-stimulated nitric oxide levels were lower in marijuana smokers but not in THC-edible users.
• FMD showed an inverse correlation with smoking frequency and THC ingestion amount.

Conclusions:

• Chronic cannabis smoking and THC ingestion are associated with endothelial dysfunction.
• The observed endothelial dysfunction is similar to that seen in tobacco smokers but may involve different mechanisms.
• Cannabis use poses a risk to vascular health, warranting further investigation into its specific pathways.