As an expert in global health statistics, I can provide you with an informed estimate based on the most recent data available. However, please note that the number of smokers worldwide is constantly changing due to various factors such as public health initiatives, economic conditions, and cultural shifts.

According to the World Health Organization (WHO), as of my last update in early 2021, approximately 1.1 billion people worldwide are smokers. This number includes both men and women, and it's important to note that the majority of smokers live in low and middle-income countries.

The WHO also reports that tobacco use is the leading cause of preventable death globally, and it's a significant risk factor for a range of non-communicable diseases, including cardiovascular diseases, cancers, and respiratory diseases.

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Tobacco kills more than 7 million people each year. More than 6 million of those deaths are the result of direct tobacco use while around 890 000 are the result of non-smokers being exposed to second-hand smoke. Nearly 80% of the world's more than 1 billion smokers live in low- and middle-income countries.read more >>