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Indietro

Fundamentals of Nutrition

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  • What is nutrition?

    Nutrition is the science studying how nutrients and compounds in foods nourish the body and affect body functions and overall health.

  • What factors drive our food choices?

    Taste, culture, social life, nutrition knowledge, advertising, time, convenience, cost, habits, and emotions.

  • Name the six classes of nutrients.

    Carbohydrates, fats (lipids), proteins, vitamins, minerals, and water.

  • Which nutrients are organic?

    Carbohydrates, proteins, lipids, and vitamins contain carbon and are organic nutrients.

  • What are essential nutrients?

    Essential nutrients must be consumed from food because the body cannot make enough to meet its needs.

  • Which nutrients provide energy?

    Carbohydrates, lipids (fats), and proteins provide energy; alcohol also provides energy but is not a nutrient.

  • How many kilocalories per gram do carbohydrates, proteins, fats, and alcohol provide?

    Carbohydrates = 4 kcal/g, Protein = 4 kcal/g, Fat = 9 kcal/g, Alcohol = 7 kcal/g.

  • What is a kilocalorie (kcal)?

    The amount of energy required to raise the temperature of 1 kilogram of water by 1 degree Celsius; used to measure energy in foods.

  • What are macronutrients and micronutrients?

    Macronutrients are needed in large amounts (carbs, fats, proteins, water); micronutrients are needed in smaller amounts (vitamins, minerals).

  • Primary function of carbohydrates?

    Supply glucose, the primary energy source for many body cells including red blood cells and brain cells.

  • Primary functions of lipids?

    Provide energy, serve as structural components of cell membranes.

  • Primary functions of proteins?

    Provide amino acids for tissue synthesis, act as enzymes, neurotransmitters, and support immune function.

  • Difference between water-soluble and fat-soluble vitamins?

    Water-soluble vitamins are not stored and need daily intake; fat-soluble vitamins are stored in the body.

  • Role of minerals in the body?

    Assist in body processes and are essential for structure of hard and soft tissues like bone and red blood cells.

  • Why is water critical for the body?

    It makes up most body fluids, aids metabolism, digestion, nutrient transport, temperature regulation, and cushions organs.

  • What is the best approach to meet nutritional needs?

    Consume a balanced diet with a variety of whole foods including whole grains, fruits, vegetables, lean meats, and low-fat dairy.

  • How does diet influence health?

    A healthy diet reduces risk of chronic diseases like heart disease, cancer, stroke, and diabetes and helps maintain healthy weight.

  • What is the A B C D method in nutrition assessment?

    Assessment of Anthropometric, Biochemical, Clinical, and Dietary data to evaluate nutritional status.

  • What are common anthropometric measures?

    Height, weight, BMI, waist-to-hip ratio, waist circumference, growth charts, and body composition.

  • What is the scientific method in nutrition research?

    A process involving observation, hypothesis formulation, experimentation, and conclusion to generate reliable nutrition knowledge.

  • What is a double-blind placebo-controlled study?

    A study where neither researchers nor subjects know who receives treatment or placebo, minimizing bias.

  • What are processed and ultra-processed foods?

    Processed foods are altered for safety or convenience; ultra-processed contain additives and are often less healthy.