Adults only (18+)

What Happens When Cannabis Is Smoked?

Smoking hemp or cannabis typically delivers THC, which is known to raise heart rate and temporarily increase blood pressure shortly after use. This effect is particularly observed within the first hour and is sometimes followed by a drop in blood pressure upon standing. These immediate effects occur regardless of whether it is high-THC cannabis or low-THC hemp, as the act of inhaling combusted plant material can trigger cardiovascular responses due to the stimulant-like effects of cannabinoids and the irritation caused by smoke.

Chronic Use and Blood Pressure Trends

Some studies suggest that regular, long-term cannabis users may exhibit slightly lower resting blood pressure, particularly among older adults. However, this trend appears more closely associated with consistent use of products rich in CBD or with very low THC content. The body’s endocannabinoid system plays a role in maintaining cardiovascular balance, but the available evidence is still early and does not support the use of smoked hemp as a reliable way to control blood pressure.

Role of Cannabidiol (CBD)

CBD, which is non-intoxicating and present in some hemp products, has been shown in controlled studies to lower resting systolic blood pressure and reduce the body’s response to stress. These findings indicate that CBD may support vascular relaxation and help modulate stress-induced pressure spikes. However, the amounts of CBD delivered through smoking hemp are typically low and inconsistent, making it an unreliable method for experiencing these potential benefits.

Smoking Hemp Is Not a Recommended Method to Lower Blood Pressure

Although CBD may offer blood pressure support when consumed in properly dosed oral supplements, smoking hemp is not a recommended method for achieving cardiovascular benefits. Smoking introduces tar, combustion by-products and irritants that can put stress on the heart and lungs. Even hemp with very low levels of THC may cause acute increases in heart rate and blood pressure shortly after inhalation. The short-term cardiovascular response to smoking is not ideal for individuals who are managing hypertension or other heart-related conditions.

Conclusion

Smoking hemp does not reliably lower blood pressure. While CBD may offer benefits when taken orally, inhaling hemp through smoking is more likely to result in temporary increases in heart rate and blood pressure, with no consistent long-term benefit. For those seeking to support their cardiovascular health, smoke-free alternatives such as CBD oil or other wellness approaches are safer and better studied.