Single cigarette takes 20 minutes off life expectancy, study finds

Figure is nearly double an estimate from 2000 and means a pack of 20 cigarettes costs a person seven hours on averageSmokers are being urged to kick the habit for 2025 after a fresh assessment of the harms of cigarettes found they shorten life expectancy even more than doctors thought.Researchers at University College London found that on average a single cigarette takes about 20 minutes off a person’s life, meaning that a typical pack of 20 cigarettes can shorten a person’s life by