Our studies on our most advanced smoke-free alternative product, the Tobacco Heating System (THS)1, are progressing rapidly. They support the following findings (when used as intended):

  • According to indoor air quality tests, the THS aerosol does not adversely affect indoor air quality. The THS is also not a source of second-hand smoke.

The totality of our studies to date indicates that the THS, while not risk-free, is likely to present less risk of harm compared to continued smoking for adult smokers who switch to it completely. 

1 The THS is marketed as IQOS

Badrul Chowdhury, Chief Life Sciences Officer, Smoke-free Products, Philip Morris International
At PMI, we are open to everyone—from academic investigators to individuals who want to replicate our findings and look at the data, analyze it, or even do part of the study themselves.
Dr. Badrul Chowdhury, Chief Life Sciences Officer, Philip Morris International

Visit our PMI Science website for more information on our findings, and to learn more about our latest science and technology updates.

What steps are we taking to independently verify our scientific data?

We are committed to seeking independent verification of the scientific data we have generated on our reduced-risk products (RRPs).* This includes:

  • Publishing over 500 peer-reviewed publications and book chapters related to our smoke-free products since 2008
  • Conducting an in-depth analysis of study reports by independent experts

* Reduced-risk products (“RRPs”) is the term PMI uses to refer to products that present, are likely to present, or have the potential to present less risk of harm to smokers who switch to these products versus continuing smoking. PMI has a range of RRPs in various stages of development, scientific assessment and commercialization. PMI’s RRPs are smoke-free products that contain and/or generate far lower quantities of harmful and potentially harmful constituents than found in cigarette smoke.