Nutrition Modules 1 & 2 Flashcards
What do diet and exercise effect?
- How we look & feel
- How we perform (Physical & Mental)
- Our chances of getting sick
- Life Expectancy
- The Quality of Life
True or false: Most sickness & disease
can be prevented
via Diet & Exercise
True
What is the purpose of eat & drink?
growth and maintenance
What are the general steps in processing nutrients in the body?
- Ingesting
- Digesting
- Absorbing
- Transporting
- Excreting
How many meals will you consume in an average lifetime?
70,000
Which leading causes of death are directly related to diet?
- cancer
- heart disease
- stroke
- diabetes
- alzheimer’s
- kidney disease
What are the two leading causes of preventable death in Canada?
- smoking
- obesity
What is the definition of nutrition?
often defined as the total of the processes of ingestion, digestion, absorption, and metabolism of food and the subsequent assimilation of nutrient materials into the tissues
What are the 6 different categories of nutrients?
- Carbohydrate
- Fat
- Protein
- Water
- Vitamins
- Minerals
Which bodily function is mainly performed by protein?
Promotion of growth and development
What bodily function is predominantly performed by carbohydrate and fat?
Provision of energy
Which nutrients are used in the regulation of metabolism?
Nutrients used in this function are vitamins, minerals, and protein. Enzymes are proteins that play an important role as catalysts that allow metabolic reactions to proceed at far higher rates than they would spontaneously.
Which nutrients are considered macronutrients (present in large amounts)?
- Carbohydrates
- Protein
- Fat
- Water
What nutrients are considered micronutrients (present in small amounts)?
- Vitamins
- Minerals
- Trace elements
What are the building blocks of carbohydrates?
- Carbon
- Hydrogen
- Oxygen
(1:2:1 ratio)
What are three types of carbohydrates?
- Sugars (simple carbohydrates)
- Starches (storage form of carbohydrates in plants)
- Fiber
What kinds of food is fiber found in?
- Whole-grain cereals and breads
- Oats
- Dried beans and peas
- Fruits and vegetables
What are five examples of starches?
- cereal
- potatoes
- pasta
- rice
- bread
Where do ‘carbs’ come from?
plant foods
What is the worst sugar substitute to consume?
high fructose corn syrup
What are sugar substitutes used instead of?
sucrose (glucose + fructose = table sugar)
Is there clear evidence that links artificial sweeteners to cancer in humans?
No
What are ‘Equal’ and ‘Nutrasweet’ examples of?
Aspartame
In how many countries is aspartame approved?
90+ (worldwide)
Is there evidence that aspartame is linked to increased occurrences of brain tumours?
No; one 1996 study suggested there might be, but this has been proven false
What is the acceptable limit for aspartame daily?
<50 mg per kg per day (that equates to several beverages)
Where is aspartame commonly found?
- diet soda
- beverages
- toppings
- gum
- desserts
- cookies
- etc.
What kind of alternative sweetener is Sugar Twin?
cyclamate
What are the characteristics of sodium cyclamate?
- non-caloric: contains zero calories
- good solubility: highly soluble in water
- good stability when used in baking
What is the oldest of alternative sweeteners?
saccharin
What is ‘Sweet ‘n Low’ an example of?
saccharin
Has a link between saccharin and cancer been proven?
No. The 1970 study with rats showed a mechanical difference between humans and rats that led to the finding. Not a risk with rats.
What kind of alternative sweetener is ‘Splenda’ an example of?
sucralose
What is the chemical composition of sucralose?
sucrose + or - 3 chlorines
What is Splenda (sucralose) often used for?
- cooking and baking, because it is heat resistant and doesn’t break down under high heat
- Used in the hair colouring process (mixed in to eliminate the burning sensation from the chemicals)
What type of alternative sweetener is Naturlose an example of?
Tagatose
What is tagatose?
A slightly altered form of simple sugar fructose
Where might you find tagatose?
Ready-to-eat breakfast cereals, soft drinks, energy bars, and chewing gum
What is a potential benefit of tagatose?
Eventual fermentation in intestine has a beneficial ‘prebiotic’ effect (gut)
What kind of alternative sweetener is ‘Sweet Leaf’?
Stevia
Where does Stevia come from?
derived from a South American shrub
When did foods containing Stevia leaves become approved in Canada?
November 2012
How are carbs made?
- Leaves capture sun’s energy
- Carbon dioxide and water are absorbed
- Energy is stored in chemical bonds producing glucose (carbon dioxide + water = glucose)
- Glucose is the primary fuel we use for energy (CHO)
How is glucose used by the body?
- Used for quick energy; supplies the body with fuel for energy
- or is converted into glycogen and stored in the liver and muscles
What occurs with protein when you have ‘adequate’ carbohydrate intake?
Protein is reserved for building and maintaining muscles and organs
What are the two types of complex carbohydrates?
starch and glycogen
What makes a carbohydrate complex?
The number of sugars that connect them together.
What are the three components of a kernel of grain?
- Bran: outer layer: great source of fiber, vitamins, and minerals
- Germ: at the base of the kernel: great source of oils and Vitamin E
- Endosperm: largest part of the kernel: starch, protein, vitamins and minerals
Which component of the grain do refined grains have?
contain only the endosperm
What components are removed from grain when it is ‘refined’.
ØThe Bran and Germ are discarded through grinding or siftingØoThe process may also including bleaching (white bread, white rice)oRefining means no oils or fiber, lost vitamins & mineralsoIf the product is ‘enriched’, only a portion of the nutrients are added back
Why are grains ‘refined’?
oTo give them a finer texture and extend shelf-life
oWhite flour, white bread, white rice, crackers, cookies, cereals, donuts, etc
What is glycogen?
Storage form of glucose in humans & animals
Glycogen stored in muscles & liver…. available when body needs energy
Can fiber be broken down?
ØCannot be broken down in digestive process o Absorbed in small intestine… then passes thru to the large intestine, virtually unchanged
What are the benefits of fiber?
- Allows us to feel more ‘full’ longer … we don’t crave between meals
- Promotes intestinal health & clear toxins (keeps us ‘regular’!)
- Lowers bad cholesterol (LDL) & regulates blood sugar (slows the release of sugar and consequent insulin rush)
What are the two types of fiber?
Soluble fiber and insoluble fiber
What are the characteristics of water soluble fiber?
- Dissolve or swell in water
- Fermented by intestinal bacteria
- Pectins, gums and mucilages also some forms of hemicellulose
- Carbohydrates in foods
What are the characteristics of insoluble fiber?
- Do not dissolve in water
- Not metabolized by intestinal bacteria
- Include cellulose, hemicellulose and lignin
- Structural and woody part of plants like bran and broccoli
Where is water soluble fiber found and what are some examples of foods that offer it?
üFound ‘inside’ plant cellsüü Citrus fruits, apples, bananas, carrots,
barley, beans, oat products
üPromotes heart health by binding cholesterol & excreting itüüRegulates blood sugar levels (lower risk of Type 2 Diabetes)
Where is water insoluble fiber found and what are some examples of foods that offer it?
- From ‘structural part’ of plants (or the outside)
- Whole grains, bran, wheat, rye, rice
- Vegetables like broccoli & celery
- Promotes intestinal health
- Binds toxins, promotes regularity
Fiber: Place most to least:
ØTwo slices of _white bread_Ø1 cup _baked beans_Ø2 slices _whole wheat bread_Ø1 _pear_Ø1 cup _enriched pasta_Ø1 medium _orange_
- Beans
- Pear
- Orange
- Whole wheat bread
- pasta
- white bread
List 6 benefits of fiber.
- Promotes Bowel Regularity
- Weight Control & Reduces Obesity (enhances feelings of fullness so consume less)
- Reduction of Constipation, Hemorrhoids (peristalsis, active, healthy gut)
- Reduction of Diabetes (blood glucose regulation)
- Reduction of Colon Cancer (phytochemicals) (toxins removed quickly)
- Reduction of Heart Disease (inhibits cholesterol)
What is the upper daily limit of fiber?
50 g of fiber is the upper limit for one day
What might occur if too much fiber is ingested?
-
Lack of nutrients digested
-
Examples:
- Food passes through you much more quickly
- Fiber binds with minerals and they are flushed out of the body
- Nutrients are not absorbed… just pass on through too quickly
-
Examples:
-
Limits nutrient intake
- Fiber fills stomach quickly before enough nutrients are consumed)
-
Children may not get enough nutrients
- Smaller stomachs so even less nutrients taken in
-
Gas, bloating, discomfort
- There’s a reason the old cowboys rode a horse length apart after a plate of beans and bread!
What is the target amount of fiber intake per day for men, women, and kids?
Adults…
25 – 35 grams per day
(Men = 35 g/day; Women = 25 g/day)
Kids…
(Age + 5 grams) per day
(i.e. 7 year old = 7 + 5 = 12 grams)
What are the current North American daily fiber averages for men and women?
Men: 17 grams
Women: 13 grams
What are some good sources of fiber from the bread, cereal, rice and grain group?
Raisin Bran - 6 gm/cup
All Bran - 20 gm/cup
Oatmeal - 4 gm/cup
Whole wheat bread - 2 gm/slice
Brown Rice - 4 gm/cup
Mini Wheats - 6 gm/cup
What are good sources of fiber in the meat and meat alternatives group?
- Lentils 16 g/cup
- Beans Brown – 11 g/cupBlack – 18g/cup
- Almonds 4 g/1/2 cup
- Cashews 4 g/cup
What are good sources of fiber in the fruit group?
Pears: 5 grams
Berries: 6-8 gms
Apples: 5 grams
Oranges: 4 grams
Bananas: 4 grams
Raisins: 5 grams
What are good sources of fiber in the vegetable group?
Baked Potato with skin: 5 grams
Peas: 4.5 grams/1/2 cups
Spinach: 10 ounces - 7 grams
Sweet Potato: 1 cup - 6 grams
Tomatoes: 6 grams - whole, raw
Green Beans: 1 cup - 4 grams
Avocado: 6 grams
Corn: 4 grams/cup
What are some guidelines regarding carbohydrate intake?
50% of your daily Calories from Carbs
90% of your Carbs should be ‘Complex’ carbs
How many carbohydrates does an Active athlete require in a day?
ACTIVE INDIVIDUALS NEED… 5 – 6 grams of Carbohydrates per KG bodyweight
How many kcal per 1 gram of alcohol?
7 kcals/g
What is the fluid intake recommendation for men?
12 cups per day (3 L)
What is the fluid intake recommendation for women?
9 cups per day (2.25 L)
How many Canadians will die annually from heart disease or cancer?
150,000
How many kcals per gram of carbs?
4 kcals/gram