Nutrition Essentials and Dietary Guidelines
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Questions and Answers

An individual is looking to increase their intake of water-insoluble fiber. Which of the following food components would be the MOST beneficial to incorporate into their diet?

  • Pectin
  • Mucilage
  • Cellulose (correct)
  • Psyllium
  • Which of the following is a potential health consequence associated with excessive alcohol consumption?

  • Elevated blood pressure (correct)
  • Improved muscle strength
  • Reduced risk of cancer
  • Increased bone density
  • Which process BEST describes what occurs when grains are refined?

  • The grain becomes a good source of water-insoluble fiber.
  • The fiber content is significantly increased.
  • The nutrients become more concentrated
  • The bran and germ are removed. (correct)
  • After a starchy meal, pancreatic amylase aids in the breakdown of starches into which of the following?

    <p>Disaccharides (D)</p> Signup and view all the answers

    If an individual consumes a food item containing lactose, they are consuming which combination of monosaccharides?

    <p>Glucose and galactose (D)</p> Signup and view all the answers

    If the pancreas were unable to produce bicarbonate, what direct effect would this have on digestion in the small intestine?

    <p>The acidic chyme entering the small intestine would not be neutralized. (A)</p> Signup and view all the answers

    A patient is experiencing difficulty digesting fats. Which of the following scenarios would most likely be the cause?

    <p>Malfunction of the liver or gallbladder. (D)</p> Signup and view all the answers

    How would the consumption of a large quantity of alcohol most likely affect the liver's ability to process fats?

    <p>Fat metabolism would decrease, potentially leading to fat accumulation in the liver. (C)</p> Signup and view all the answers

    If someone has consumed a toxic amount of alcohol, which organ is primarily responsible for detoxifying the alcohol to remove it from the bloodstream?

    <p>The liver (D)</p> Signup and view all the answers

    How does alcohol consumption affect nerve signal transmission in the body?

    <p>It slows nerve signals, impairing functions like judgment, muscle control, and coordination. (B)</p> Signup and view all the answers

    Which study design is MOST suitable for observing the long-term effects of a dietary intervention on a group of individuals?

    <p>Longitudinal study (C)</p> Signup and view all the answers

    A client is advised to follow the AMDR guidelines. If the client consumes 2000 calories per day, what is the acceptable range of calories they should consume from fat?

    <p>400-700 calories (A)</p> Signup and view all the answers

    Which of the following is NOT a primary consideration when establishing Dietary Reference Intakes (DRIs)?

    <p>Activity level (A)</p> Signup and view all the answers

    A patient reports their food intake over the last 24 hours to a Registered Dietitian. Which method of dietary assessment is being used?

    <p>Diet recall (C)</p> Signup and view all the answers

    Why is the term 'Registered Dietitian' regulated by law?

    <p>To ensure that only qualified individuals provide nutrition advice (D)</p> Signup and view all the answers

    A nutrition label is MOST likely to be required to display the amounts of which set of micronutrients?

    <p>Sodium, calcium, iron (C)</p> Signup and view all the answers

    Increasing dietary intake of calcium and vitamin D is MOST likely to reduce the risk of what condition?

    <p>Osteoporosis (C)</p> Signup and view all the answers

    Which list contains only essential amino acids?

    <p>Lysine, methionine, threonine (C)</p> Signup and view all the answers

    What is the primary distinction between Type 1 and Type 2 diabetes concerning insulin production and cellular response?

    <p>Type 1 is characterized by autoimmune destruction of insulin-producing cells, whereas Type 2 involves cellular resistance to insulin. (A)</p> Signup and view all the answers

    Which factor does NOT directly influence the postprandial blood glucose response following carbohydrate consumption?

    <p>The individual's consumption of artificial sweeteners. (A)</p> Signup and view all the answers

    Besides hyperglycemia, what are potential long-term health risks associated with Type 2 Diabetes?

    <p>Cardiovascular disease and kidney disease. (D)</p> Signup and view all the answers

    How does lactose intolerance differ fundamentally from a milk allergy?

    <p>Lactose intolerance results from a deficiency in the lactase enzyme, whereas a milk allergy involves an immune response to milk protein. (B)</p> Signup and view all the answers

    If a person wants to reduce their sugar intake, which of the following would be the LEAST useful to consider?

    <p>Increasing consumption of milk products to improve digestive health. (B)</p> Signup and view all the answers

    How does consuming a diet rich in fruits and vegetables primarily contribute to reducing cancer risk?

    <p>By providing phytochemicals that possess antioxidant properties. (C)</p> Signup and view all the answers

    Why is a diet low in fermentable carbohydrates recommended for reducing dental caries?

    <p>It reduces the substrate available for bacteria to produce harmful acids. (D)</p> Signup and view all the answers

    Which of the following best describes the primary function of bile in the digestive process?

    <p>Emulsifying fats to facilitate their absorption. (C)</p> Signup and view all the answers

    How does the sympathetic nervous system influence digestion during a 'fight or flight' response?

    <p>It redirects blood flow away from the digestive system, slowing down digestion. (B)</p> Signup and view all the answers

    Which of the following foods is the best source of lignans, a type of phytochemical?

    <p>Flaxseeds (C)</p> Signup and view all the answers

    Which of the following is the most accurate description of how water-soluble nutrients are transported after absorption in the small intestine?

    <p>They are transported directly into the bloodstream and processed by the liver. (D)</p> Signup and view all the answers

    What is a key characteristic of functional foods that differentiates them from other foods?

    <p>They contain biologically active compounds offering benefits beyond basic nutrition. (C)</p> Signup and view all the answers

    What effect do phytoestrogens have that may help in osteoporosis prevention?

    <p>They mimic the effects of estrogen, which can help maintain bone density. (B)</p> Signup and view all the answers

    Flashcards

    Essential Amino Acids

    Eight amino acids that the body cannot synthesize and must be obtained from diet.

    Essential Fatty Acids

    Fatty acids necessary for health; includes linoleic acid and linolenic acid.

    AMDR

    Acceptable Macronutrient Distribution Range indicating percentage of carbs, fats, and proteins recommended in the diet.

    RDA

    Recommended Dietary Allowance; the daily intake level sufficient to meet nutrient needs for most individuals.

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    Diet Recall vs Record

    Recall is a 24-hour review where clients can lie; Record is a 3-5 day log that might change eating habits.

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    Epidemiological Studies

    Large-scale studies comparing health outcomes across populations.

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    Intervention Studies

    Research manipulating a group to observe the effects of specific dietary changes.

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    Nutritional Labelling

    Information on food packaging that includes nutrient content like sodium, calcium, iron, and potassium.

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    Heart Disease Prevention

    A diet low in saturated and trans fats reduces heart disease risk.

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    Cancer Prevention

    A diet high in fruits and vegetables may reduce cancer risk.

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    Dental Health

    A diet low in fermentable carbohydrates decreases dental caries.

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    Phytochemicals

    Natural plant compounds that may offer health benefits.

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    Functional Foods

    Foods containing biologically active compounds with benefits beyond basic nutrition.

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    Nutrient Absorption

    Movement of nutrients from the small intestine into the blood or lymph via villi.

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    Nutrient Transport: Water-soluble

    Water-soluble nutrients are transported via blood processed in the liver.

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    Nutrient Transport: Fat-soluble

    Fat-soluble nutrients are transported via the lymphatic system.

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    Hydrochloric Acid

    A strong acid with a low pH in gastric juices.

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    Pepsin

    An enzyme produced in the stomach that breaks down proteins.

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    Pancreatic Amylase

    An enzyme from the pancreas for carbohydrate digestion.

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    Alcohol Metabolism Location

    Alcohol is mainly metabolized in the liver with enzymes.

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    MEOS

    Microsomal ethanol oxidizing system that aids in alcohol metabolism.

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    Type 1 Diabetes

    An autoimmune condition resulting in the destruction of insulin-producing cells in the pancreas, leading to little to no insulin production.

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    Type 2 Diabetes

    A condition where cells become resistant to insulin, often associated with obesity, accounting for 90% of diabetes cases.

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    Postprandial CHO Digestion

    The increase in blood sugar levels after eating, influenced by the amount consumed and the digestion rate.

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    Sugar Alcohols

    Sweeteners like sorbitol, xylitol, and malitol, used as lower-calorie alternatives to sugar.

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    Lactose Intolerance vs Milk Allergy

    Lactose intolerance is due to a lack of lactase enzyme, while a milk allergy involves an immune response to milk proteins.

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    Alcohol health risks

    Alcohol increases risk of high blood pressure, dementia, certain cancers, muscle deterioration, and Wernicke-Korsakoff syndrome.

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    Wheat Kernel parts

    A wheat kernel consists of four parts: germ, endosperm, bran, and husk.

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    Monosaccharides

    The simplest form of carbohydrates that include glucose, fructose, and galactose.

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    Disaccharides

    Carbohydrates made up of two monosaccharides; examples include sucrose, lactose, and maltose.

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    Water soluble fiber

    Includes gums, pectin, and psyllium; helps lower cholesterol, slow glucose absorption, and reduces heart disease risk.

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    Study Notes

    8 Essential Amino Acids

    • Threonine, valine, tryptophan, isoleucine, leucine, lysine, phenylalanine, methionine

    2 Essential Fatty Acids

    • Linoleic acid and linolenic acid

    Essential Vitamins

    • Fat-soluble (A, D, E, K) and water-soluble

    Epidemiological Studies

    • Large-scale comparisons between populations

    Intervention Studies

    • Manipulating populations

    Longitudinal Studies

    • Research that follows and retests the same people over time

    Registered Dietitian Requirements

    • Term regulated by law
    • Member of provincial regulatory board
    • Optional: Membership with Dieticians of Canada
    • Undergraduate degree + internship

    Diet Recall vs Record

    • 24 hours, client may lie
    • 3-5 days, recording may change eating habits

    AMDR

    • Acceptable Macronutrient Distribution Range
    • CHO: 45-65%
    • Fat: 20-35%
    • Protein: 10-35%

    RDA

    • Recommended Dietary Allowance: intake goals

    EAR

    • Estimated Average Requirement: average intake based on life stages

    AI

    • Adequate Intake

    UL

    • Tolerable Upper Intake Level

    Factors Not Considered in DRI

    • Activity level
    • Diet type
    • Geography/socioeconomic/cultural
    • Illness/disease states

    Factors Considered in DRI

    • BMI
    • Age

    Nutritional Labelling Micronutrient Requirements

    • Sodium, calcium, iron, potassium

    Benefit of a Diet Low in Sodium and High in Potassium

    • Less hypertension

    Benefit of Calcium and Vitamin D in the Diet

    • Less osteoporosis

    Benefit of a Diet Low in Saturated and Trans Fats

    • Less heart disease

    Benefit of a Diet High in Fruits and Vegetables

    • Less cancer

    Benefit of a Diet Low in Fermentable Carbohydrates

    • Less dental caries

    Phytochemicals

    • Natural plant compounds with potential health benefits

    Phytochemical Found in Tomatoes

    • Lycopene

    Phytochemical Found in Garlic

    • Organosulfur

    Phytochemical Found in Flaxseeds

    • Lignans

    Role of Flavonoids in Health

    • Antioxidants

    Foods Rich in Flavonoids

    • Soy, wine, tea, chocolate

    Health Benefit of Phytoestrogens

    • Osteoporosis prevention

    Functional Foods

    • Contain biologically active compounds
    • Benefits beyond basic nutrition

    Parasympathetic Nervous System (Digestion)

    • Regulates digestion via gastric juices

    Sympathetic Nervous System

    • Stress, "fight or flight"

    Bile

    • Cholesterol-containing digestive fluid that emulsifies fat
    • Made by the liver, stored in the gallbladder, released in the small intestine

    Nutrient Absorption

    • Movement of nutrients from the small intestine into the blood or lymph via villi and microvilli

    Nutrient Transport for Water-Soluble Nutrients

    • Via blood; small intestine -> processed in liver -> liver distributes to the rest of the body

    Nutrient Transport for Fat-Soluble Nutrients

    • Via lymphatic system; small intestine -> lymph system

    Stomach Chemical Digestion

    • Gastric juices (hydrochloric acid (HCl) and pepsin, etc.)
    • Hydrochloric acid: strong acid/low pH
    • Pepsin: enzyme to break down protein

    Small Intestine in Digestion

    • Pancreas (Bicarbonate neutralizes acid. Enzymes to break down CHO, protein, and fat)
    • Liver and gallbladder (bile emulsifies fat)

    Enzyme for Carbohydrate Digestion (Pancreas)

    • Pancreatic amylase

    Enzyme for Fat Digestion (Pancreas)

    • Pancreatic lipase

    Enzyme for Protein Digestion (Pancreas)

    • Trypsin and chymotrypsin

    Liver and Gallbladder Function

    • Creation and storage of bile (emulsifies fat in small intestine)

    GERD

    • Gastroesophageal reflux disease

    Nutrient Storage Systems

    • Fat: adipose tissue
    • CHO: glycogen in liver and muscles
    • Minerals: bones (calcium, phosphorus)

    Alcohol Consideration

    • Depressant

    Alcohol Absorption

    • Stomach and small intestine (80%)

    Alcohol Metabolism Location

    • Liver (80% via alcohol dehydrogenase (ADH)), 10% MEOS

    MEOS

    • Microsomal ethanol-oxidizing system (chain of enzymes that break down alcohol).

    Alcohol's Effects on Bodily Functions

    • Slows nerve signals
    • Judgement
    • Muscle control
    • Heart and Breathing

    Alcohol's Effects on Cells

    • Dissolves lipids, penetrates cell's membranes readily
    • Denatures cell proteins
    • Fat accumulation in liver

    Alcohol Increases Risk Of

    • High blood pressure
    • Dementia
    • Mouth, liver, breast cancers
    • Muscle deterioration
    • Thiamin deficiency (Wernicke-Korsakoff syndrome)

    Wheat Kernel

    • 4 Parts (Germ, endosperm, bran, husk).

    Refined

    • Removal of bran, germ

    Monosaccharides

    • Glucose, fructose, galactose

    Disaccharides

    • Sucrose (fructose + glucose), lactose (galactose + glucose), maltose (glucose + glucose)

    DRI Recommendation for Fiber

    • 25g

    DRI Recommendation for Sugar

    • Less than 25% of calories from sugar

    Starch

    • Storage of glucose in plants (branched or unbranched), insoluble

    Water Soluble Fiber Includes

    • Gums, mucilage, pectin, psyllium, some hemicellulose

    Water Soluble Fiber Aids In

    • Lowering blood cholesterol
    • Slowing glucose absorption
    • Reducing heart and diabetes risk

    Water Insoluble Fiber Includes

    • Cellulose, lignin, some hemicellulose

    Water Insoluble Fiber Aids In

    • Increasing bulk
    • Reducing diverticular disease, hemorrhoids, appendicitis

    Small Intestine in CHO Digestion

    • Enzymes (disaccharides -> monosaccharides)
    • Pancreatic amylase (starches -> disaccharides)
    • Monosaccharides -> liver -> glucose

    CHO Digestion/Glucose Conversion Occurs In

    • Small intestine (monosaccharides are converted to glucose)

    Type 1 vs Type 2 Diabetes

    • Type 1: autoimmune destruction of insulin-producing cells (little to no insulin produced)
    • Type 2: cells become resistant to insulin (90% of cases)

    Postprandial CHO Digestion

    • Blood sugar increases after consumption
    • Amount of increase reflects consumed amount, rate of digestion, glucose entry into blood stream, and glucose uptake rates by body cells.

    Type 2 Diabetes Increases Risk Of

    • Cardiovascular disease
    • Kidney disease

    Sugar Alcohols

    • Sorbitol, xylitol, malitol

    Artificial Sweeteners

    • Aspartame, sucralose, acesulfame-k

    Lactose Intolerance vs Milk Allergy

    • Lactose intolerance: lack of lactase enzyme;
    • Milk allergy: immune response to milk protein

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    Description

    Explore the critical components of nutrition, including essential amino acids, fatty acids, and vitamins. This quiz also covers dietary study methodologies and the requirements for registered dietitians. Test your knowledge on Recommended Dietary Allowance and Acceptable Macronutrient Distribution Range.

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