Exam 3 Flashcards
What is cancer (general)
abnormal cells begin to grow out of control in the body
What causes cancer
damage to DNA
What are two important cells involved in cancer
oncogenes
proto-oncognes + tumor suppressor genes
What is an oncogene
cell that had the potential to cause cancer
This normally occurs in a cell with damaged DNA, but does not in a cancer cell
apoptosis
cells often travel to other parts of the body by getting into the bloodstream or lymph system is called
metastasis
Cancer rates
half of all men and one third of all women in the U.S. will develop cancer in their lifetime
Number one cancer in males
prostate
Number one cancer in females
breast
Number one cause of cancer death in males and females
lung and bronchus
Risk factors for cancer include (11) Note modifiable vs non-modifiable
Age family history tobacco use sunlight exposure radiation exposure chemical exposure viruses alcohol use poor diet lack of physical activity overweight/obese
This percent range of cancer is due to genetics
5-10%
Alcohol is known cause of cancers of the following
mouth throat voice box esophagus liver colon/rectum breast
List the 4 BMI ranges
< 18.5 = underweight
18.5-25 = healthy
>= 25 = overweight
>= 30 = obese
Someone who has a BMI in the obese range has this percent chance of dying prematurely
50-100% higher
T/F: increased body weight does not lower your chances of surviving cancer
F
Mechanisms by which obesity induces or promotes tumorigenesis can vary, but include
insulin resistance
chronic hyperinsulinaemia
increase bioavailability of steroid hormone
localized inflammation
Overweight and obese people have cancer rates that are strongly linked to the following
post-menopausal breast cancer colon cancer uterine cancer esophageal cancer kidney cancer
Steps to reduce risk of cancer (modifiable)
Maintain a healthy weight
stay physically active
eat a healthy diet
convincing evidence says that this decreases your risk of colon cancer
physical activity
convincing evidence says that this increases your risk of esophagus, colorectal, breast, uterine and kidney cancer
overweight and obesity
convincing evidence says that this increases your risk of oral cavity, liver, breast, and esophagus cancer
alcohol
This percent of americans reported taking a dietary supplement in the last month (2009)
52%
This are the most commonly used supplements
vitamins and minerals
These are often used after diagnosis of a health condition
botanicals
Why an increase in popularity of supplements
lack of confidence in the modern diet
aging population
increase in self-medication
increase in health awareness and disease prevention
People take supplements to do the following
improve nutrition make up for missing nutrients decrease risk of disease weight loss increase energy look better
DSHEA 1994
dietary supplement health and education act 1994
T/F: DSHEA affirmed that supplements are to be regulated similar to foods and set standards for regulation of dietary supplements
T
T/F: Due to DSHEA food and supplements have to prove they are safe to consume
F, they do not have to prove they are safe and must only defend safety
The dietary supplement and nonprescription drug consumer protection act of 2006 put into law that
manufacturers must report serious adverse events from their supplements
GMP, and what does it go into effect
good manufacturing practices 2007
by june 2010 all manufacturers must comply with GMP
GMP states that
products are to be produced in a quality manner
do not contain contaminants or impurities
accurately labeled
cleanliness of manufacturing plant
A supplement can have the following ingredients according to DSHEA
vitamin, mineral, herb or other botanical, and amino acids
supplements cannot be represented as this and must be labeled as this
conventional food or sole item of a meal or diet
“dietary supplement”
What must supplement labeling include (4)
must stat the product is a supplement
name and place of manufacturer, packer, or distributor
name and quantity of each ingredient
supplement facts panel
What else must be on a supplement label when present in measurable amounts
macro-nutrients vit a and c calcium iron sodium cholesterol
DSHEA allows dietary supplements to bear “statement of support” that
claim a benefit related to a classical nutritional deficiency disease
structure function claims
describe general well being from the ingredients
Number of days a claim must be made available to the FDA before its use on packaging
30 days
No claims are allowed for the following regarding supplements
diagnose prevent mitigate treat cure a disease
USP label shows this
standards have been met for quality, purity, identity and strength of supplements
What does the dietary guidelines for americans say about supplements (4)
use supplements to fill a specific nutrient gap
supplements cannot replace a healthful diet
supplements will not add additional health benefits to a nutritious diet
supplements may cause intakes to exceed safe levels of nutrients
MVM =
multivitamin/mineral supplement
MVMs are not effective in preventing this
chronic disease
Ca + Vit D is effective in preventing this
osteoporosis
Take care about exceeding ULs for the 4 following
Iron
zinc
vitamin A
Niacin
Use supplements in these situations
meet nutrient requirement treat a diagnosed deficiency during restricted energy intake for weight loss alcohol-dependance strict vegetarians/vegans pregnancy
This entity provides position papers regarding nutrient supplementation, functional foods, fatty acids, fiber, non-nutrient ingredients
Academy of Nutrition and Dietetics
How do whole grains fit into dietary guidelines for americans
food and food components to increase (whole)
food and food components to reduce (white)
Definition of whole grains
Whole grains or foods made from them containing all the essential parts and naturally-occurring nutrients of the entire grain seed
Enrichment
adding nutritive substances that were naturally present in the food but were removed during processing
fortification
added nutritive substances that are not naturally present in the food
All purpose flour has only this section of the grain seed
endosperm
Parts of the whole grain seed
endosperm
bran
germ
this part of the grain oxidizes easiy
germ
Bran
outer shell protects seed
fiber, B vitamins, trace minerals
endosperm
provides energy
carbohydrates, protein
Germ
nourishment for the seed
antioxidants, vitamin E, B vitamins
How can you determine if a grain product is a whole grain
first ingredient must be whole wheat, or whole grain
T/F: if a product is made from oats or brown rice, ingredients list does not need to say “whole”
T
What is the difference between the basic whole grain stamp and 100% whole grain stamp
The basic stamp must contain atleast 8 grams whole grain per serving, and can be used on products that contain some non-whole grain ingredients
The 100% stamp all grains ingredients must be whole grains, and contain atleast 16 grams of whole grains per serving
What requirements must a food product meet in order to have the FDA whole grain health claim on its label
Meet definitions for “low saturated fat and cholesterol”
< 6.5 g trans fat
What are the health benefits of whole grains
weight management CVD Type 2 diabetes gastrointestinal health cancer
What are the the components responsible for the health benefits of whole grains
fiber fat minerals vitamins (antioxidants) phytochemicals
Traditional whole grains
wheat
rice
corn
oats
Why is corn concidered a vegetable
folic acid
one of the first domesticated cerals
wheat
most important staple food for a large part of the world’s population
rice
Oats contain this which is very effective at lowering blood cholesterol
beta glucan fiber
This is a pseudograin with a nutty flavor
amaranth
this is a grain with a very tough hull, and has fiber distributed throughout the endosperm
barley
This is the seed of an herb and grows well in poor soils
buckwheat
THis is a dietary staple in asia and africa, and is prepared like rice
millet