Is iQOS harmful? Heated tobacco devices should not be considered as an effective and harmless method, especially in smoking cessation. The most reliable option available is to completely avoid tobacco and nicotine products. More independent, comprehensive, and long-term studies are needed to clarify the long-term effects. Is IQOS smoking harmful? Experts and international health organizations agree that "every tobacco product is harmful". The CDC emphasizes that heat-treated tobacco products are also harmful to everyone, including teenagers and pregnant women. In addition, according to the WHO, there is not enough scientific evidence that IQOS, a heat treatment product, is less harmful than ... [Read more]