The main culprit of the effects of aging on the skin is nicotine and other cancerous chemicals in cigarettes
The FHS features frequent, repeated, in-person assessments of smoking status and intensity over the course of half a century or more, allowing for comprehensive lifetime capture of smoking
Recuperative trips to Arizona ranches and Colorado luxury hotels, where the air was drier
The person may experience different sensations or varying severity of chest pain
Accumulated evidence indicates that the illicit cigarette market is relatively larger in countries with low taxes and prices, while relatively smaller in countries with higher cigarette taxes and prices
The Surgeon General's Office estimates that almost nine out of 10 smokers began smoking before age 18, while virtually every smoker -- a full 99 percent -- started by age 26