© 2010 Cengage-Wadsworth 12345 Ch. 12 Cancer Prevention 1. Cancer is _____________. #____ Cause of Death in the U.S. Benign is ____________. Malignant.

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Presentation transcript:

© 2010 Cengage-Wadsworth Ch. 12 Cancer Prevention 1. Cancer is _____________. #____ Cause of Death in the U.S. Benign is ____________. Malignant is __________. Metastasis is __________. 2. Cancer Prevention (7 Simple Choices): Up to ___% are preventable thru lifestyle. C H O I C E S 3. Cancer Detection (7 Warning Signals): C A U T I O N

© 2010 Cengage-Wadsworth Cancer Cancer: diseases characterized by uncontrolled growth and spread of abnormal cells Cell growth is controlled by DNA and RNA, found in the nucleus of each cell Uncontrollable and abnormal cell growth forms a mass of tissue called a tumor which can be either benign or malignant. – Benign: Noncancerous – Malignant: Cancerous – Metastasis: Spread of cancer cells

© 2010 Cengage-Wadsworth Incidence of Cancer Cancer will develop in approximately one of every two men and one of every three women in the U.S., striking approximately three of every four families The incidence of cancer is higher in African Americans than in any other racial or ethnic group

© 2010 Cengage-Wadsworth Year 2008 estimated cancer incidence and deaths by site and sex

© 2010 Cengage-Wadsworth Prevention of Cancer: Choices Cancer is largely preventable As much as 80% of all human cancer is related to lifestyle or environmental factors – Cut out tobacco – Hold the fat – Only moderate use of alcohol if at all – Increase high fiber fruits, veggies & grains “phytochemicals” – Call your Dr for regular checkups – Exercise 30 minutes a day – Safeguard your skin from the sun C H O I C E S

© 2010 Cengage-Wadsworth Effects of a healthy lifestyle on cancer mortality rate Research indicates that individuals who have a healthy lifestyle have some of the lowest cancer mortality rates Investigators looked at the healthy lifestyle guidelines of the Mormon church - abstaining from all forms of tobacco, alcohol, and drugs, and adhering to a well- balanced diet of grains, fruits, vegetables, and moderate amounts of poultry and red meat The 10,000 study participants from the church had only about one-third to one-half the rate of cancer mortality of the general white population The conclusion is that lifestyle is definitely an important factor in the risk for cancer

© 2010 Cengage-Wadsworth Dietary Changes One-third of all cancer in the U.S. is related to poor nutrition and lack of physical activity A healthy diet is crucial to decrease the risk for cancer Predominately a vegetarian diet (high in fiber and low in fat) Cruciferous vegetables, tea, soy products, calcium, and omega-3 fats are encouraged Protein intake should be kept within the recommended guidelines Alcohol should be used in moderation Avoid obesity

© 2010 Cengage-Wadsworth Behavior Modification Planning: Lifestyle Factors that Decrease Cancer Risk Physical activity Fiber Fruits and vegetables Recommended weight Healthy grilling Tea Spices Vitamin D Monounsaturated fat

© 2010 Cengage-Wadsworth Nutrition guidelines for a cancer-prevention program include a diet low in fat and high in fiber, with ample amounts of fruits and vegetables

© 2010 Cengage-Wadsworth Guidelines for Preventing Cancer Green and dark yellow vegetables, cruciferous vegetables (cauliflower, broccoli, Brussels sprouts, Kohlrabi), beans (legumes) seem to protect against cancer Folate found in dark green leafy vegetables, dried beans, orange juice, may reduce the risk for colon and cervical cancers Lycopene, from tomotoes, has been linked to lower risk for cancers of the prostate, colon, cervix

© 2010 Cengage-Wadsworth Heavy drinking and smoking greatly increase the risk of oral cancer

© 2010 Cengage-Wadsworth Cigarette smoking, obesity, and excessive sun exposure are major risk factors for cancer

© 2010 Cengage-Wadsworth Physical Activity An active lifestyle has been shown to have a protective effect against cancer There is an inverse relationship between cancer mortality in men and women and physical fitness A daily 30-minute, moderate- intensity exercise program lowers the risk for cancers of the colon, breast, and reproductive system Evidence suggests that the body’s autoimmune system may play a role in preventing cancer and that moderate exercise improves the autoimmune system

© 2010 Cengage-Wadsworth Behavior Modification Planning: Cancer Promoters Physical inactivity Being more than 10 pounds overweight Frequent consumption of red meat A diet high in fat Charred/burned foods Frequent consumption of nitrate-/nitrite-cured, salt- cured, or smoked foods Alcohol consumption Excessive sun exposure Estrogens Methyleugenol (flavoring agent in packaged foods) Radon Wood dust (high levels)

© 2010 Cengage-Wadsworth Warning Signals of Cancer Change in bowel or bladder habits A sore that does not heal Unusual bleeding or discharge Thickening or lump in the breast or elsewhere Indigestion or difficulty in swallowing Obvious change in wart or mole Nagging cough or hoarseness C A U T I O N

© 2010 Cengage-Wadsworth Warning Signs of Melanoma: ABCD Rule

© 2010 Cengage-Wadsworth Critical Thinking Have you ever had, or do you now have, any family members with cancer? Can you identify lifestyle or environmental factors as possible contributors to the disease? If not, are you concerned about your genetic predisposition, and, if so, are you making lifestyle changes to decrease your risk?

© 2010 Cengage-Wadsworth Ch. 12 Cancer Prevention 1. Cancer is _____________. #____ Cause of Death in the U.S. Benign is ____________. Malignant is __________. Metastasis is __________. 2. Cancer Prevention (7 Simple Choices): Up to ___% are preventable thru lifestyle. C H O I C E S 3. Cancer Detection (7 Warning Signals): C A U T I O N

© 2010 Cengage-Wadsworth Labs 12 A & 12B Pages