As a public health expert with a focus on epidemiology and health behaviors, I can provide you with information on the impact of smoking on life expectancy. It's important to note that the length of life for an individual smoker can vary greatly depending on numerous factors, including the number of cigarettes smoked per day, the duration of the smoking habit, genetic predispositions, lifestyle choices, and access to healthcare.

Smoking is a leading cause of preventable diseases and significantly reduces life expectancy. On average, smokers die about 10 to 15 years earlier than non-smokers. However, this is a general statistic and individual outcomes can differ. The risk of various diseases, including lung cancer, heart disease, stroke, and chronic obstructive pulmonary disease (COPD), increases with smoking. Quitting smoking at any age can improve health outcomes and increase life expectancy, with the benefits becoming more pronounced the earlier one quits.

read more >>

The evidence about smoking and longevity is pretty definitive: those who don't smoke tend to live significantly longer. In our calculator, you'll often see life expectancy results that differ by 10 years or more between a non-smoker and a heavy smoker. The numbers are striking.read more >>