Energy Balance: Intake vs. Output

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Questions and Answers

What constitutes energy balance?

  • The consumption of protein exceeding carbohydrate intake.
  • The burning of calories exceeding calorie consumption.
  • The equilibrium between calories consumed and calories burned. (correct)
  • The intake of vitamins and minerals exceeding their expenditure.

What dietary change would most effectively shift someone into a state of positive energy balance?

  • Increasing water intake while maintaining current food consumption.
  • Consuming more calories than the body expends. (correct)
  • Decreasing caloric intake while increasing physical activity.
  • Expending more calories through exercise than consumed through diet.

What defines a state of negative energy balance?

  • Increased storage of fat without usage as fuel.
  • Equal balance between calorie consumption and expenditure.
  • Calorie consumption being less than calorie expenditure. (correct)
  • Calorie consumption being greater than calorie expenditure.

If Jim, who is 25 years old and weighs 165 lbs, consumes an extra 100 kcal daily while maintaining the same activity level, what is the most likely long-term outcome?

<p>Jim will gain a small insignificant amount of weight. (A)</p> Signup and view all the answers

What is the primary way the body prevents continuous weight gain from a short period of positive energy balance?

<p>By increasing resting energy expenditure. (D)</p> Signup and view all the answers

In humans, what typically happens to excess carbohydrates and proteins that are not immediately used for energy?

<p>They are first expended, then fat is increasingly stored. (A)</p> Signup and view all the answers

What is the primary fate of excess calories in the body, regardless of their source (carbohydrates, proteins, or fats)?

<p>They are converted into fat and stored. (D)</p> Signup and view all the answers

According to the provided estimates, what is the daily caloric requirement for a moderately active 15-year-old female?

<p>2,000 kilocalories (C)</p> Signup and view all the answers

Using the estimation method provided, what would be the approximate healthy weight for a woman who is 5'8"?

<p>140 lbs (A)</p> Signup and view all the answers

Which of the following is considered a macronutrient?

<p>Carbohydrates (B)</p> Signup and view all the answers

Which of the following is a primary function of lipids (fats) in the body?

<p>Providing structure for the body's cells (C)</p> Signup and view all the answers

What is a key characteristic of vitamins?

<p>They regulate bodily processes. (C)</p> Signup and view all the answers

Why is water considered the most important nutrient?

<p>The body is composed of approximately 60% water, and it is essential for numerous bodily functions. (A)</p> Signup and view all the answers

Which of these ingredients would disqualify bread from being a 'whole grain' food?

<p>Enriched Flour (A)</p> Signup and view all the answers

What is a common characteristic of 'bad fats' like trans and saturated fats?

<p>They increase the risk of heart disease. (B)</p> Signup and view all the answers

Which statement accurately describes the role of carbohydrates (CHO) in the body?

<p>CHO are a major source of fuel during exercise. (A)</p> Signup and view all the answers

Which of the following modifications to traditional food preparation would best align with the Mediterranean diet principles?

<p>Using olive oil as a main cooking ingredient. (B)</p> Signup and view all the answers

What is a key finding from the Seven Countries Study regarding cardiovascular disease?

<p>Cardiovascular risk factors are universal. (A)</p> Signup and view all the answers

In the context of the DASH diet, what is the recommended upper limit of sodium intake for most adults, according to the American Heart Association?

<p>1,500 mg per day (B)</p> Signup and view all the answers

According to the DASH diet guidelines, which of the following is considered a single serving of grains?

<p>1 slice of whole-wheat bread (B)</p> Signup and view all the answers

Someone adhering to the Mediterranean diet would likely consume which type of meat most frequently?

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

How does thyroid hormone activity affect weight management?

<p>It regulates metabolic rate, influencing energy expenditure. (D)</p> Signup and view all the answers

What differentiates 'good fats' from 'bad fats'?

<p>Good fats are monounsaturated and polyunsaturated, associated with heart health, while bad fats are trans and saturated, increasing heart disease risk. (D)</p> Signup and view all the answers

According to the sample nutrition label, what percentage of the Daily Value (DV) for sodium is provided in one serving?

<p>20% (C)</p> Signup and view all the answers

What did the DIRECT study reveal regarding the effects of different diets on weight loss?

<p>Low-carbohydrate and Mediterranean diets were more effective than low-fat diets. (D)</p> Signup and view all the answers

Which statement best describes how the body handles excessive consumption of both carbohydrates and proteins?

<p>They are either converted into fat or used for energy. (D)</p> Signup and view all the answers

If someone’s diet primarily consists of grain-based desserts, yeast breads, and chicken mixed dishes, what aspect of their nutritional intake is likely being overemphasized?

<p>Caloric intake from processed grains and added sugars. (B)</p> Signup and view all the answers

What is the underlying biochemical reason humans have limited capacity to convert carbohydrates or protein to fat?

<p>Humans lack sufficient enzymes to efficiently perform this conversion. (A)</p> Signup and view all the answers

How might increased thyroid hormone activity physiologically counteract weight gain from positive energy balance?

<p>By increasing the rate at which the body burns calories at rest. (B)</p> Signup and view all the answers

Which of the following best describes how the Mediterranean diet favorably impacts cardiovascular health relative to a low-fat diet, as suggested by Gepner et al.?

<p>By decreasing hepatic fat content. (D)</p> Signup and view all the answers

What evolutionary adaptation might underlie the body's propensity to store excess calories as fat rather than converting them into muscle or directly excreting them?

<p>Survival advantage during periods of famine or inconsistent food availability. (D)</p> Signup and view all the answers

Given that the average American diet contains 3,400 mg of sodium or more per day, and 1 teaspoon of salt contains approximately 2,300 mg of sodium, what does that indicate?

<p>That reducing salt intake would bring most American diets closer to recommended sodium levels. (D)</p> Signup and view all the answers

Referencing the Food Pyramid graphic, which food group should constitute the largest portion of a traditional diet?

<p>Bread, Cereal, Rice &amp; Pasta (A)</p> Signup and view all the answers

What is the primary focus of the DASH diet regarding sodium intake?

<p>Limiting sodium intake to help lower blood pressure. (D)</p> Signup and view all the answers

What is the most accurate method for determining whether a food product consists of whole grains?

<p>Check the ingredient list to ensure that a whole grain is listed as the first ingredient. (A)</p> Signup and view all the answers

Which of the following is NOT considered one of the Top Sources of Calories in Americans 2 Years and Older?

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

Why might nutritionists advise the patient to avoid food that lists “High fructose corn syrup” as one of it's ingredients?

<p>It is a code word for sugar. (B)</p> Signup and view all the answers

If both the Mediterranean and DASH diets are considered heart-healthy, what are their key distinct approaches?

<p>The Mediterranean diet emphasizes healthy fats and fish, while DASH focuses on sodium reduction. (C)</p> Signup and view all the answers

What physiological process is most immediately affected by the consumption of water-soluble vitamins?

<p>Energy Extraction from Macronutrients (A)</p> Signup and view all the answers

Based on the data supplied, what potentially confounding factor may have skewed the results of the Seven Countries Study?

<p>The study made no adjustments for pre-existing health disparities between the populations. (A)</p> Signup and view all the answers

Flashcards

Energy Balance

Balance of calories consumed through eating/drinking compared to calories burned.

Weight Maintenance

Energy intake equals energy expenditure.

Weight Gain

Energy intake is greater than energy expenditure.

Weight Loss

Energy intake is less than energy expenditure.

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Macronutrients

Large quantities of nutrients required by the body.

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Carbohydrates

Starches and sugars; major fuel source during exercise.

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Lipids (Fats)

Provides structure for body cells and carries fat-soluble vitamins.

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Proteins

Amino acids combine to form proteins.

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Micronutrients

Needed in smaller quantities, they regulate bodily processes.

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Vitamins

Regulate body processes and promote growth, but don't provide energy.

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Minerals

Essential for health; deficiencies are uncommon except in calcium and iron.

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Water

Chemically the simplest and most important nutrient.

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Trans Fat

Worst dietary fat, often found in margarine and shortening.

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Saturated Fats

Common in the American diet (red meat, whole milk); increase heart disease risk.

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Good Fats

Monounsaturated and polyunsaturated fats; protective against heart disease.

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Whole Grains

Unrefined grains that still have their bran and germ.

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Mediterranean Diet

Diet high in fruits, vegetables, whole grains, olive oil, and fish.

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Ancel Keys

Ancel Keys pointed out the correlation between cardiovascular disease and diet.

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DASH Diet

Emphasizes vegetables, fruits, low-fat dairy, and moderate amounts of whole grains, fish, poultry, and nuts to stop hypertension.

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Standard DASH Diet

Limit sodium intake to no more than 2300 mg a day.

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Lower Sodium DASH Diet

Limit sodium intake to no more than 1500 mg a day.

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Study Notes

  • Energy balance balances calories consumed by eating and drinking with calories burned.

Weight Maintenance

  • Energy intake equals energy output when maintaining weight in energy balance.

Weight Gain

  • A positive energy balance indicates weight gain, where energy intake surpasses energy output.

Weight Loss

  • A negative energy balance results in weight loss, where energy intake is less than energy output.

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