When Katrina quit smoking four years ago, she thought her lungs would heal. But, new studies prove her wrong.
Research shows that adolescence is the most dangerous time to start smoking.
When kids smoke, it causes permanent damage to DNA in growing lungs. Damage which is less likely to occur for smokers who begin in the adult years. In the past, we assumed that your risk goes up with the amount of time you had smoked. But it really didn t have to do with when you started smoking in life, says Dr. Alan Harsch, Pulmonary Medicine. Now researchers say when smokers start is probably more important than how much they smoke.