Smoking accounts for almost 20% of lung cancer cases, a statistic health experts say represents over 100 thousand preventable lung cancers in men, and over 90 thousand in women. 

The National Cancer Institute says quitting smoking cuts lung cancer risk by 30 to 50 percent in 10 years, and cuts mouth cancer risk in half after five years. 

According to advanced gastroenterologist Dr. Brooke Glessing, colorectal cancer is the third most preventable cancer. A precancerous polyp in the colon can take 10 years to develop into cancer, but with frequent screening, that risk can be eliminated.

“In everything that we have to deal with in life, this is one thing that we can actually intervene upon, and I think that that's exciting,” Glessing said.

Getting the hepatitis b and HPV vaccines can decrease your risk of anal cancer. 

The American Cancer Society developed this acronym for when to get screened: CAUTION. 

- Change in bowels

- A sore that doesn't heal

- Unusual bleeding

- Thickening or lump in the breast

- Indigestion

- Obvious change in wart or mole

- Nagging cough.

“I think the more we talk about it, the more we educate people about it, the greater likelihood that people will actually come in and get screened,” Glessing said.

Researchers say other factors that increase your risk of cancer include excessive body weight, consumption of alcohol, and ultraviolet radiation.

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