Secondhand Smoke Causes Nearly 1.7 Million Deaths Globally, Study Finds

A new study published in The Lancet Public Health reveals that secondhand smoke exposure caused approximately 1.7 million deaths worldwide in 2023, affecting more than 2.7 billion people including children. The research highlights the serious health risks associated with passive smoking, which can lead to heart disease, respiratory conditions, and cancer. Secondhand smoke contains over 7,000 chemicals, hundreds of which are toxic and about 70 can cause cancer. This global burden of disease underscores the urgent need for stronger smoke-free policies and public health interventions to protect vulnerable populations, especially children, from involuntary smoke exposure.