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Regulation in "green states" offers some consumer protection against one major vaping risk: contaminants.

Vaping avoids some of the known health risks of smoking and delivers THC more efficiently.

Well established risks of cannabis vaping include respiratory, neurological, and psychological harm.

Little is known, however, about risks to immune, reproductive, cardiovascular, and gut health, to name a few.

Recreational marijuana is legal in 24 U.S. states, including New York. Nonetheless, on March 31, 2026, state regulators shut down two stores in Rome, NY for illegally selling cannabis products. In fact, similar raids occur about once a month in legal states across the country. Why?

The answer has to do with regulation. Each “green state” has its own regulatory board that (1) licenses producers and retailers, (2) sets and enforces rules around cultivation, production, and testing, and (3) conducts inspections to ensure compliance. Anything produced or sold outside of this system is deemed black market, and therefore illegal.

Why Regulate a Plant?

All that oversight might seem a bit much for cannabis—it’s just flower buds from a plant, after all. But derivative products like edibles and concentrates are less straightforward. This is where safety and regulation matter especially.

Regulated cannabis vape products are limited to a few specific ingredients. Independent, state-certified labs conduct both batch and spot testing to ensure product integrity. Outside of regulated production, oils may contain contaminants that go undetected, such as:

Unsafe heavy metal quantities.

Unapproved ingredients like Vitamin E acetate, implicated in the EVALI outbreak.

Synthetic cannabinoids.

Dangerous narcotic drugs, including fentanyl.

What is Cannabis Vaping?

Cannabis refers to marijuana or hemp. Vaping cannabis involves using a specialized vape pen or pod to heat and aerosolize an oil that contains a cannabis or cannabis-derived extract. The aerosolized “vapor” (not a vapor at all) is inhaled through the device’s mouthpiece in the same manner as smoke from a cigarette.

Why Vape Instead of Smoking?

Smoking marijuana exposes the lungs to carbon monoxide (CO) and toxic pyrolytic compounds, which are absent or significantly lower in vape oil aerosol, mitigating a major aspect of cancer risk (Chaiton et al, 2021).

Vaping cannabis looks, for the moment, like an improvement over smoking. Research has found less lung irritation, better lung capacity, and fewer symptoms such as cough, phlegm, and chest tightness in vapers versus smokers (Chaiton et al, 2021).

Marijuana vaping is also considered more efficient than smoking for the following reasons:

Potency: The primary psychoactive constituent in marijuana (THC) is more concentrated in vape oils: up to 95%, compared to a maximum of 23% in smoked marijuana (Sharma et al., 2023; Glinn & Michaud 2023).

Delivery: Less THC is lost to pyrolysis (Holt et al., 2022).

Absorption: Lungs more........

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