We estimate that there were approximately 82 million nicotine vaping product users worldwide in 2021.

Our results rely on the robustness of available survey data and assumptions about extrapolation where data are unavailable.

For more information, see the methodology section in the article Estimation of the global number of e‑cigarette users in 2020 (https://rdcu.be/cz1dV).

A briefing paper on the current estimate based on new data published in 2021 can be found here.