Similar to the previous study, Thun and colleagues showed that quitting smoking by age 40 almost completely erases the increased risk of smoking-related death.
In the second study, Dr. Michael Thun at the American Cancer Society and his co-authors examined 50 years of smoking-related health data collected by the organization since 1959.
The discoveries also cleared up a long-standing mystery about a Roman lodging house found on the slopes above the present-day town of Thun, where there was a Roman temple and settlement.
First comes Giovanni Punto, an 18th-century Bohemian who became the subject of an aristocratic fatwa requiring the removal of his front teeth when he had the temerity to leave his boss Count Joseph von Thun's employment without permission.