Nutrition Science Essentials

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Questions and Answers

Match the following nutrition assessment methods with their corresponding focus:

Individuals = Historical data, dietary recall Populations = USDA Food Intake Survey

Match the following health outcomes with their relationship to diet:

Heart Disease = Strong relationship with diet Stroke = Strong relationship with diet Diabetes = Strong relationship with diet Cancers = Strong relationship with diet

Match the following leading risk factors for chronic diseases with their ranking:

Poor Diet = Number 2 Alcohol = Number 4 Tobacco = Number 1 Inactivity = Number 3

Match the following credentials with their corresponding description:

<p>Registered Dietitian Nutritionist (RDN) = A food &amp; nutrition expert with a minimum of a bachelor's degree, completion of an accredited program, supervised practice, and national exam Physicians = May provide nutrition information but may not be nutrition experts Other Health Professionals = May provide nutrition information but may not be nutrition experts Registered Dietitian (RD) = A food &amp; nutrition expert with a minimum of a bachelor's degree, completion of an accredited program, supervised practice, and national exam</p> Signup and view all the answers

Match the following nutrition information sources with their key characteristics:

<p>Legitimate Nutrition Information = Backed by scientific research results Critical thinking = Essential for evaluating nutrition information Consider the source = Assess qualifications and motivations of information providers Following the science = Prioritizing evidence-based information</p> Signup and view all the answers

Match the following terms with their corresponding definitions:

<p>Nutrients = Chemical substances obtained from food, essential for energy, growth, and other bodily functions. Essential Nutrient = A nutrient that the body cannot produce in sufficient quantities and must be obtained from diet. Phytochemicals = Non-nutrient compounds found in plant foods with potential health benefits. Diet = The foods and beverages a person regularly consumes.</p> Signup and view all the answers

Match the nutrient category with its energy content per gram:

<p>Carbohydrate = 4 kcal Protein = 4 kcal Fat = 9 kcal Water = 0 kcal</p> Signup and view all the answers

Match the following dietary components with their primary sources:

<p>Lycopene = Tomatoes, papaya, watermelon Flavonoids = Whole grains, fruits, vegetables Resveratrol = Red wine, grapes Indoles = Cruciferous vegetables</p> Signup and view all the answers

Match the following terms related to nutrition with their definitions:

<p>Nutrition = The science of food, nutrients, and their effects on the body. Energy Density = A measure of the energy a food provides relative to its weight. Essential Nutrient = A nutrient that the body cannot produce in sufficient quantities and must be obtained from diet. Phytochemicals = Non-nutrient compounds found in plant foods with potential health benefits.</p> Signup and view all the answers

Match the following nutrients with their primary functions:

<p>Carbohydrates = Provide energy for the body Proteins = Used for building and repairing tissues Fats = Provide energy, insulate organs, and transport vitamins Water = Essential for hydration, bodily functions, and nutrient transport</p> Signup and view all the answers

Match the following terms related to energy from food with their definitions:

<p>Kilocalorie (kcal) = The unit of measurement for food energy Kilojoule (kJ) = Another unit of measurement for food energy Energy Density = A measure of the energy a food provides relative to its weight Alcohol = Provides calories but is not considered a nutrient</p> Signup and view all the answers

Match the following examples of foods with their primary phytochemical content:

<p>Tomatoes, papaya, watermelon = Lycopene Whole grains, fruits, vegetables = Flavonoids Red wine, grapes = Resveratrol Cruciferous vegetables = Indoles</p> Signup and view all the answers

Match the following nutrient categories with their examples:

<p>Macronutrients = Carbohydrates, proteins, fats Micronutrients = Vitamins, minerals Organic Nutrients = Carbohydrates, proteins, fat, vitamins Inorganic Nutrients = Minerals, water</p> Signup and view all the answers

Match the following food items with their respective energy densities.

<p>8 oz non-fat milk = 70 kcal 100 g grapes = 69 kcal 3 oz lean beef = 179 kcal 8 fl.oz. whole milk = 170 kcal 100 g raisins = 299 kcal 3 oz beef hot dogs = 289 kcal</p> Signup and view all the answers

Match the nutrient with its corresponding energy value per gram.

<p>Carbohydrate = 4 kcal/g Protein = 4 kcal/g Fat = 9 kcal/g</p> Signup and view all the answers

Match the food item with its calculated total calories.

<p>Chicken Sandwich (Burger King) = 663 kcal French Fries = 362 kcal Coke, med, 12 oz = 172 kcal</p> Signup and view all the answers

Match the following concepts with their definitions:

<p>Empty Calories = Calories that come with no or low amounts of nutrients Nutrient Dense Foods = Foods that provide good amounts of nutrients for the calories provided High Energy Density Meals = Meals that provide more calories per gram, ounce, or bite Low Energy Density Meals = Meals that provide fewer calories and more nutrients per gram, ounce, or bite</p> Signup and view all the answers

Match the types of research designs with their descriptions.

<p>Epidemiological Studies = Studies that observe patterns of health and disease in populations Experimental Studies = Studies that manipulate variables to test the effects of a treatment or intervention Cross Sectional Study = A type of epidemiological study that collects data from a population at a single point in time Case Controlled Study = A type of epidemiological study that compares individuals with a disease to individuals without the disease to identify potential risk factors Cohort Study = A type of epidemiological study that follows a group of individuals over time to examine the development of a disease Laboratory &amp; Animal Studies = Studies conducted in a controlled laboratory setting using animals as subjects Laboratory in Vitro Studies = Studies conducted in a laboratory setting using cells or tissues Human Intervention Study = Studies that involve humans as subjects and manipulate variables to test the effects of a treatment</p> Signup and view all the answers

Match the Dietary Reference Intake (DRI) categories with their descriptions:

<p>Estimated Average Requirement (EAR) = Intake levels of nutrients estimated to meet the needs of 50% of the population Recommended Dietary Allowance (RDA) = Average daily amounts of nutrients recommended to meet the nutrient needs of 97.5% of the healthy population Adequate Intake (AI) = Established for nutrients for which there is not enough scientific evidence to set RDAs Tolerable Upper Intake Level (UL) = Estimates of safe upper limits of nutrient intakes Chronic Disease Risk Reduction Intake (CDRR) = Level of intake of a nutrient recommended to reduce risk of chronic disease</p> Signup and view all the answers

Match the DRI energy recommendations with their descriptions:

<p>Estimated Energy Requirement (EER) = The average energy intake needed to maintain weight and energy balance for healthy people Acceptable Macronutrient Distribution Ranges (AMDR) = Ranges of macronutrients (as % of daily kcal) recommended to meet energy and nutrient needs and to support good health</p> Signup and view all the answers

Match the following terms with their definitions:

<p>Peer-review = A process where experts review scientific articles before they are published in a journal Correlations = Associations between variables that do not necessarily prove causation Cause &amp; Effect = A relationship where one variable directly influences another Scientific Method = A systematic approach to conducting research that involves observation, hypothesis formation, experimentation, and analysis Nutrient Density = The amount of nutrients per calorie in a food</p> Signup and view all the answers

Match the sources of empty calories with their descriptions:

<p>Saturated Fat = A type of fat found in animal products and some plant-based foods Added Sugars = Sugars that are added to foods during processing or preparation Alcohol = A type of beverage that can contribute to empty calories</p> Signup and view all the answers

Match the following nutrition assessment terms with their definitions:

<p>Anthropometric Measurements = Measurements of body size and composition, such as height, weight, and body mass index (BMI) Biochemical Measurements = Measurements of blood, urine, or other bodily fluids to assess nutrient levels or metabolic function Clinical Assessment = Evaluation of an individual's physical signs and symptoms to identify potential nutritional deficiencies or problems Dietary Assessment = Collection of information about an individual's food intake, such as food frequency questionnaires, 24-hour recalls, or food diaries</p> Signup and view all the answers

Match the following nutrient intake recommendations with their abbreviations:

<p>Estimated Average Requirement = EAR Recommended Dietary Allowance = RDA Adequate Intake = AI Tolerable Upper Intake Level = UL Chronic Disease Risk Reduction Intake = CDRR</p> Signup and view all the answers

Match the following terms related to dietary guidelines with their descriptions:

<p>Dietary Guidelines for Americans = A set of evidence-based recommendations for healthy eating that are updated every five years MyPlate = A visual representation of the Dietary Guidelines for Americans that illustrates the proportions of different food groups that should be consumed Food Groups = Categories of foods that share similar nutrient profiles Serving Size = A standard amount of food that is used to guide portion control</p> Signup and view all the answers

Match the following food labels with their information:

<p>Nutrition Facts Label = A label that provides information about the nutrient content of food Daily Value (DV) = A percentage of daily nutrient intake based on a 2,000-calorie diet Ingredient List = A list of ingredients in a food product, ordered from most to least prevalent Dietary Claims = Statements about how a food may affect health, such as &quot;low fat&quot; or &quot;high in fiber&quot;</p> Signup and view all the answers

Match the following types of dietary patterns with their descriptions:

<p>Vegetarian Diet = A diet that excludes meat, poultry, and seafood Vegan Diet = A diet that excludes all animal products, including meat, poultry, seafood, eggs, and dairy Flexitarian Diet = A diet that emphasizes plant-based foods but allows for occasional consumption of meat and other animal products Mediterranean Diet = A diet that emphasizes fruits, vegetables, whole grains, legumes, nuts, seeds, olive oil, and fish</p> Signup and view all the answers

Flashcards

NHANES

National Health & Nutrition Examination Survey covering physical exams and nutrition data.

Leading Causes of Death Related to Diet

Four major causes: Heart Disease, Cancers, Stroke, and Diabetes.

Key Risk Factors

Top risk factors include Tobacco, Poor Diet, Inactivity, and Alcohol.

Registered Dietitian Nutritionist (RDN)

Expert in food and nutrition, requires a degree and certification.

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Evaluating Nutrition Information

Assess nutrition info critically, based on scientific research and credible sources.

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Nutrition

The science of foods, nutrients, and their effects in the body.

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Diet

The foods and beverages a person consumes.

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Nutrients

Chemical substances from food that provide energy, growth, and repair.

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Essential Nutrient

Nutrients that must be obtained from food as the body cannot produce enough.

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Macronutrients

Nutrients required in large amounts, providing energy.

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Micronutrients

Nutrients needed in small amounts, including vitamins and minerals.

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Phytochemicals

Non-nutrient compounds in plants that have health benefits.

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Energy Density

A measure of the energy a food provides relative to its weight.

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High Energy Density

Foods that provide more kcalories per gram, often high in fat.

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Low Energy Density

Foods that provide fewer kcalories per gram; usually low in fat and high in water or fiber.

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Nutrient Density

The amount of nutrients provided per kcal; high in nutritious foods.

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Calculating Kcalories

Determining total kcal in food by multiplying grams of fats, carbs, and proteins by their energy values.

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Empty Kcalories

Calories that provide little to no nutritional value, like sugary snacks.

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Epidemiological Studies

Research observing health outcomes and dietary habits in populations.

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Experimental Studies

Controlled trials to test specific hypotheses about diet and health.

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Estimated Average Requirement (EAR)

Average nutrient intake level estimated to meet needs of 50% of the population.

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Recommended Dietary Allowance (RDA)

Daily nutrient intake levels recommended for 97.5% of the population.

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Tolerable Upper Intake Level (UL)

Maximum daily intake of a nutrient unlikely to cause harm.

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Adequate Intake (AI)

Estimated daily intake level for nutrients with insufficient data to establish RDA.

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Chronic Disease Risk Reduction Intake (CDRR)

Nutrient levels recommended to reduce risk of chronic diseases.

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Acceptable Macronutrient Distribution Ranges (AMDR)

Ranges of macronutrients as a percentage of total daily kcal.

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Estimated Energy Requirement (EER)

Average daily kcal needed to maintain weight and energy balance.

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Study Notes

Nutrition Science

  • Nutrition is the science of foods, nutrients, and their effects on the body (ingestion, digestion, absorption, transport, metabolism, excretion). It can also include societal, economic, cultural, and psychological aspects.
  • Diet is the foods and drinks a person consumes.
  • Nutrients are chemicals from food, providing energy, structural materials, and regulating bodily functions, also potentially reducing disease risks.
  • Essential nutrients are obtained from food since the body cannot produce them in sufficient quantities. There are about 40 known essential nutrients.

Six Classes of Essential Nutrients

  • Essential nutrients are categorized into six classes, with some being macronutrients (needed in large amounts) and others micronutrients (needed in smaller amounts):
    • Carbohydrates
    • Protein
    • Lipids (fats)
    • Vitamins
    • Minerals
    • Water

Energy from Food

  • Food energy is measured in kcalories (kcal) or kilojoules (kJ).
    • 1 kcal is equivalent to 4.184 kJ.
  • Nutrients providing energy (kcal) per gram:
    • Carbohydrates: 4 kcal/gram
    • Protein: 4 kcal/gram
    • Fat: 9 kcal/gram
  • Vitamins, minerals, and water provide no energy.
  • Alcohol provides 7 kcal/gram but is not a nutrient.

Energy Density

  • Energy density is a food's energy relative to its weight.
  • High-fat foods have higher energy density than low-fat foods due to fat's higher energy content per gram.
  • High energy-density foods give more kcal per gram/ounce/bite than low energy-density foods. These low-density choices also usually have more nutrients for the calories consumed.

Calculating Calories from Foods

  • Total kcals for a food can be calculated by multiplying the grams of each macronutrient by its corresponding kcal/gram value.

Empty Calories

  • Empty calories provide little to no nutrients and can negatively impact overall nutrition.
  • Saturated fat, added sugars, and alcohol are examples of sources of empty calories.
  • Diets high in empty calories are usually low in essential nutrients.

Conducting Nutrition Research

  • Nutrition is a science-based field using various research methods including:
    • Epidemiological studies (cross-sectional, case-controlled, cohort)
    • Experimental studies (laboratory, animal, human intervention, in vitro)
  • Research results must be replicated (verified) to be considered reliable and valid.
  • Critically evaluate research results and consider the source's qualifications and motivations.

Dietary Reference Intakes (DRIs)

  • DRIs provide nutrient intake guidelines for healthy individuals in the U.S. and Canada.
  • DRIs contain 5 categories:
    • Estimated Average Requirement (EAR): Intake levels of nutrients estimated to meet 50% of the population's needs.
    • Recommended Dietary Allowance (RDA): Average daily nutrient amounts needed to meet the needs of 97.5% of the healthy population, by age and sex.
    • Adequate Intake (AI): Represents the average amount of nutrients consumed by healthy people when no RDA exists.
    • Tolerable Upper Intake Level (UL): Safe upper limits for nutrient intakes, to avoid toxicity.
    • Chronic Disease Risk Reduction Intake (CDRR): Level of intake to reduce chronic diseases risk.

DRI Energy Recommendations

  • Estimated Energy Requirement (EER): Average energy intake needed to maintain a healthy person's weight and energy balance.
  • Acceptable Macronutrient Distribution Ranges (AMDR): Ranges of macronutrients expressed as a percentage of daily kcal, for good overall health.
    • Carbohydrates: 45-65% of kcal
    • Fat: 20-35% of kcal
    • Protein: 10-35% of kcal

Nutrition Assessment

  • Nutrition assessments are conducted on individuals and populations using various methods.
  • Types of methods for individuals: historical information, anthropometric measures, physical exams, and laboratory tests.
  • Examples of population-based methods: National Nutrition Monitoring, USDA food intake surveys, DHHS NHANES surveys.
  • Diet and health have strong relationships to the leading causes of death such as heart disease, cancer, stroke, and diabetes.

Nutrition Information and Misinformation

  • Critical thinking and evaluating the source's qualifications and motivations are important in evaluating nutrition information.
  • Registered Dietitian Nutritionists (RDNs) are qualified food and nutrition experts with specific education and training requirements.

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