People have used tobacco for centuries, cigarettes did not appear in mass-manufactured form until the 19th century. Since then, the practice of cigarette smoking has spread worldwide on a massive scale.
Today, about one in three adults, or 1.1 billion people, smoke. Of these, about 80 percent live in low- and middle-income countries. Partly because of growth in the adult population, and partly because of increased consumption, the total number of smokers is expected to reach about 1.6 billion by 2025.cigarettes shop without paying "convenience" store prices. Cigarettes like other tobacco products do carry health effects with them. Most modern manufactured cigarettes are filtered and include tobacco.