Cancer Flashcards
~1.9 million new cases of cancer diagnosed yearly in the U.S.
1 in ____ males and 1 in ___ females will be diagnosed with cancer in their lifetime
Occurrence of cancer increases with age
Most common cancers are ________
_____ leading cause of death in the U.S.
_______ cancer causes the most cancer deaths
2
3
breast & prostate
2nd
Lung
uncontrolled division of abnormal cells that can spread throughout the body
Cancer
a substance that induces cancer
carcinogen
a new & abnormal formation of tissue that serves no useful purpose
neoplasm
neoplasm can invade tissues and spread to distant tissues & organs
Metastasis
Transformation of cells by the interaction of chemicals, radiation, or viruses with cellular DNA
initiation
Initiated cells are activated by a promoting agent to multiply & form a discrete tumor; escape mechanisms that should destroy these cells
promotion
tumor cells aggregate and grow into malignant tumors capable of tissue invasion & metastasis
progression
Alcohol has a causal role in ___________
- Oral cavity, pharynx, larynx, esophagus, stomach, colorectal, gallbladder, pancreas, liver, & breast cancers
- Direct cell ________
- Acts synergistically with________
- May replace nutrient dense foods in the diet
carcinogenesis
toxin
tabacco
Obesity is associated with:
- Increased incidence of breast, endometrial, renal, liver, colorectal, esophageal, & pancreatic cancer
- Increased risk of cancer _______
- Increased cancer _______
- Greater risk with ________ obesity
mortality
recurrence
abdominal
Red meat=> “_______ increased risk” of _______ cancer
Processed meat=> “_________ increased risk” of ______ cancer
probable
colorectal
convincing
colorectal
Sodium & potassium _______ and ______ are used in processes of salting, pickling, and smoking foods
Produce __________=> carcinogens
Possible increased risk of _______ and ________ cancer
nitrates and nitrites
nitrosamines
colorectal
gastric
Vitamin _____ & _________ can slow the conversion of nitrites to nitrosamines
C
phytochemicals
Charring or cooking meat at high temperatures (>_____° F) over an open flame=>formation of ______________
Possible increased risk of _______ cancer with frequent intake
400
polycyclic aromatic hydrocarbons (PAHs)
gastric
Higher PAH formation with:
________
________
Higher fat meats
Charcoal grilling
Industrial chemical used in the manufacturing of many hard, plastic bottles and linings of food & beverage cans
Bisphenol A (BPA)
BPA May have carcinogenic effects
To reduce exposure:
- Reduce use of ________ & _________ or choose BPA-free products (check labels)
- Don’t put ________ in plastic containers made with BPA
- Don’t _________ in plastic containers
plastic bottles
canned foods
very hot liquids
microwave food
Intake of foods high in dietary fiber associated with a probable decreased risk of ______ cancer
colorectal
Both_______ products & ______ supplements associated with a probable decreased risk of colorectal cancer
dairy
calcium
Coffee associated with a probable _______ risk of_____ & ________ cancer
decreased
liver
endometrial
Coffee contains ________ & ________ which may have anticancer properties
antioxidants
phenols
Non-starchy Vegetables & Fruits
- Major sources of _________ and ________
- Probable decreased risk of => oral cavity, pharynx, larynx, esophageal, stomach, colorectal, & lung cancer
phytochemicals & antioxidants
Anticarcinogenic Compounds
Antioxidants
Phytochemicals
Antioxidants include (3)
Vitamin C
Vitamin E
selenium
Phytochemicals are
biologically active components in plants
Recommended to obtain Anticarcinogenic Compounds from ____________
foods rather than supplements
Mechanism of Action of Phytochemicals
- ________ effects
- Induce _________ enzymes
- Inhibit ___________ formation
- Binding of _________ in the GI tract
- Alter ________ metabolism
- _________ modulating effects
Antioxidant effects
Induce detoxification enzymes
Inhibit nitrosamine formation
Binding of carcinogens in the GI tract
Alter hormone metabolism
Immune modulating effects
Phytochemicals (T 35-1 & T 35-3)
Carotenoids
Phenols
Indoles
Lignans
Allyl sulfides
Three carotenoids and where to get them from
Beta-carotene
- (carrots, mangos, sweet potato)
Lycopene
- (tomatoes & tomato products, papaya, pink grapefruit, watermelon)
Lutein
- (kale, spinach, collard, mustard & turnip greens)
Two Phenols and where to get them from
Flavonoids
- (berries, grapes, red wine, plums, purple cabbage, green tea)
Isoflavones
- (soybeans)
Where to get Indoles
(arugula, bok choy, cabbage, broccoli, brussels sprouts, cauliflower)
Sources of Lignans
(whole grains, legumes, flaxseed)
Allyl sulfides sources
(leeks, onion, garlic, chives)
Some studies have found increased incidence of _____ cancer for smokers who take __________ supplements
lung
beta-carotene
Soy contains_________ which are ________
Modest soy intake may ______ breast cancer especially if consumed long-term beginning before adulthood
isoflavones
phytoestrogens
protect against
Regular _______ reduces the risk of colorectal, breast cancer, & endometrial cancer
exercise
Aim for a minimum of ______ minutes of moderate intensity or _____ minutes of vigorous intensity activity each week
Doing some physical activity above usual activity, no matter one’s level of activity, can have many health benefits
Limit sedentary behavior such as sitting, watching TV, etc.
150
75
Aim to fill at least _______ of your plate with vegetables, fruits, whole grains and beans
Eat at least ______ cups of vegetables & fruits each day
Choose _______ instead of refined grain products
two-thirds
2.5 cups
whole grains
Limit processed foods high in _____, ____, or _____
Limiting these foods helps to maintain a healthy weight
fat, starches, or sugars
Limit red meat consumption to moderate amounts
(no more than _________/week)
Eat little, if any, _________ meat
12-18 oz/week
processed
There is strong evidence that regular consumption of _____________ causes weight gain, overweight & obesity
Drink mostly water and unsweetened drinks
sugar-sweetened beverages
For cancer prevention, its best not to drink alcohol
For those who do drink alcohol, limit to no more than ____ drink per day for women and ____ drinks per day for men
1 drink = ____ oz. beer, ___ oz. wine, _____ oz. distilled spirits
1
2
12 oz
5 oz
1.5 oz
Aim to meet nutritional needs through ______
diet alone
There is strong evidence that __________ helps protect against breast cancer in mothers
Babies who are ________ are less likely to become overweight and obese
breastfeeding
breastfed
Factors that can decrease oral intake:
Anorexia
Treatment side effects
GI symptoms & distress
Depression
Fatigue
Difficulty chewing or swallowing
______ (change in taste)
Food aversions
Economic factors
Dysgeusia
Metabolic Effects of Cancer
CHO abnormalities=> _______, _______, and ________
insulin resistance
increased gluconeogenesis
hyperglycemia
metabolic effects on cancer
Protein=> __________________ => ________________ and __________________
increased catabolism (gluconeogenesis) =>
skeletal muscle wasting & organ atrophy
decreased protein synthesis
metabolic effects on cancer
Fat=> _____________
Increased lipolysis
Metabolic Effects of Cancer also include
Host-Tumor competition for _______
Fluid & electrolyte imbalances
- _________
- ________
nutrients
Vomiting & diarrhea
Hypercalcemia (bone metastases)
Syndrome of progressive weight loss, anorexia, generalized wasting, weakness, increased REE, & immunosuppression ?
Major cause of morbidity & mortality
Caused in part by ________
Cancer Cachexia
cytokines
Pharmaceutical Management of Anorexia & Cachexia
Appetite stimulants
Example of appetite stimulant
megestrol acetate (Megace)
appetite stimulants effects and side effects/cons
Stimulates appetite
Promotes weight gain (especially fat)
Has not been found to increase LBM
Side effects: edema
Use of medications to promote lethal injury to cancerous cells
Chemotherapy