My father died in 1981 at the age of 59 through Lung Cancer even though he was classified as a non-smoker. He had given up Players Plain Capstan High Stength (that speaks for itself - not even the filtered version if there was one) about 14years previously having gone from about 20 a day to zero overnight. That took some doing! Apparently he started smoking on 5th June 1944. He also suffered from nightmares until the 1960s because, like lots of men, he had witnessed the horrors of the Belsen Concentration Camp when it was liberated in April 1945. I put his death down to a combination of the delayed latent effects of smoking, stress and other matters arising from his and his brothers experiences in WW2. Also no councelling in those days.