PHYSICAL APPEARANCE

Above all the health problems that cigarette smoking can cause and contribute to, there is also the effect on physical appearance to consider.  Smoking can cause more wrinkling and discolored nails, fingers and teeth.  There is also the smell that smoking is associated with that clings to clothes, people, and breath.  One study that looked at twins and there appearance found that the most notable exogenous factors influencing degree of aging were sun exposure and smoking⁸.