
Effects of smoking seen in twins —
The twin on the left has smoked 17 years longer than the twin on the right. Note the differences in lower lid bags and upper and lower lip wrinkles.

Effects of smoking seen in twins —
Both twins are smokers. The twin on the right smoked 14 years longer than his brother.

Effects of smoking seen in twins —
The twin on the right is a smoker; the twin on the left is a nonsmoker. Note the differences in the lines between the nose and mouth.

Effects of smoking seen in twins —
The twin on the left is a nonsmoker and the twin on the right smoked for 29 years. Note the differences in aging around the eyes.