According to a new study, about 67 per cent of all smokers will die from the habit, which is larger than earlier believed.

The new research shows that smoking id more harmful than earlier thought. The new study shows that two-thirds of smokers will die early from smoking-related health issues. The study in Australia shows that doctors had a low estimate of smokers who die from their habit as the tru figure is about 67 per cent.

Experts said that the earlier one stops smoking, the better the chances of avoiding those diseases. The study said that the risk of diseases increases with the intensity of smoking. The intensity is measures by the amount of tobacco smoked per day, and with increasing duration of smoking.Smoking can lead to higher risk of 13 different cancers, according to the study. The Centers for Disease Control and Prevention estimates about 42.1 million Americans smoke cigarettes, which is the leading cause of preventable disease and death in the U.S.

Emily Banks, the study's co-author and a researcher at the Australian National University, said, “We knew smoking was bad, but we now have direct, independent evidence that confirms the disturbing findings that have been emerging internationally.”