A new study conducted by scientists with the International Agency for Research on Cancer, a division of the World Health Organization, reveals that tobacco products may be linked to several more types of cancer than already identified. The project analyzed over 3,000 tobacco smoke studies involving millions of people. During the review, scientists discovered that smoking may cause cancers of the uterus, cervix, nasal sinus, stomach and liver.

The report reveals that the risk of developing a tumor due to tobacco use is actually twice as high as previously believed. Researchers also intensified the debate over the dangers of secondhand smoke, insisting it increases a person's risk of lung cancer by 20 percent.