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Trends Comparing the Carcinogenicity of Heated Tobacco Products Vs Cigarettes

A study comparing the amount of carcinogens between regular cigarettes and heated tobacco products, found that the latter contain about 10- to 25-fold lower carcinogens than cigarettes.

Titled, Method for Comparing the Impact on Carcinogenicity of Tobacco Products: A Case Study on Heated Tobacco Versus Cigarettes,the study looked at eight carcinogens which are known to occur in the emissions of both heated tobacco products (HTPs) and tobacco smoke.

The researchers compared the harmful health effects of the two products, by applying a risk assessment method consisting of six steps. The first three steps encompass dose-response analysis of cancer data, resulting in relative potency factors with confidence intervals. The fourth step evaluates emission data, resulting in confidence intervals for the expected emission of each compound. The fifth step calculates the change in cumulative exposure (CCE), probabilistically, resulting in an uncertainty range for the CCE. The sixth step estimates the associated health impact by combining the CCE with relevant dose-response information.

The compiled data indicated that CCE was estimated to be 10- to 25-fold lower when using HTPs instead of cigarettes. The researchers pointed out that this difference indicates a substantially smaller reduction in expected life span, based on available dose-response information in smokers. However, given that only eight carcinogens were considered, this is only a preliminary conclusion.

Adding e-cigarettes to the mix

Meanwhile, a 2018 study conducted by renowned anti-smoking expert Dr Konstantinos Farsalinos had analyzed and compared carbonyl emissions from an HnB device, an e-cigarette and a regular cigarette.

Compared with the tobacco cigarettes, levels for HnB devices were found to be 91.6% lower for formaldehyde, 84.9% lower for acetaldehyde, 90.6% lower for acrolein, 89.0% lower for propionaldehyde and 95.3% lower for crotonaldehyde.

With regards to e-cigarettes, no levels of propionaldehyde and crotonaldehyde, and very low levels of the other carbonyls were detected. When using 5g of e-cigarette liquid, in comparison to 20 cigarettes a 92.2 to 99.8% reduced level of carbonyls was noted. Whilst when comparing 20 heets sticks with the same amount of cigarettes, an 81.7 to 97.9% level of reduced emissions was measured.

Vapesourcing Opinion:

There is no doubt that the carcinogenicity of cigarettes is much greater than that of HNB and e-cigarettes, and this result has been verified many times.

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