Many people might think that smoking a few cigarettes a week is not harmful; a new research states that yet low levels of tobacco exposure might cause lung diseases.

Recently a study had published in the Journal of Respiratory and Critical Care Medicine, still the minute levels of exposure to smoke might cause very dangerous genetic changes at the cellular level in the lungs, causing serious damage to the cells that are necessary for breathing.

This kind of damage is observed in both common smokers and people who are exposed to smoking by smokers,which in turns causes (COPD) chronic obstructive pulmonary disease or may cause cancer.

Zab Mosenifar, director of the Women’s Lung Institute said “These cells, they have these antennae, they pick up very low levels of tobacco. Small airway epithelium is very sensitive.” adding that “This says even a small amount of exposure to smoke does create changes at the cellular level in genetically susceptible people.”

Crystal also said that if you are irregular smoker, yet you are at risk of getting cancer.

This kind of finding could make the new way for advancement of new best method to identify people who were more susceptible to the health effects and in accordingly treat them.