Weight Loss Knowledge 2 — Questions and Answers
Question 1: Which hormone signals fullness to the brain after eating?
- Leptin (Correct answer)
- Ghrelin
- Cortisol
- Insulin
Correct answer: Leptin
Leptin is released by fat cells and signals the hypothalamus that the body has enough energy stored.
Question 2: What is the primary role of dietary fiber in weight management?
- Increasing caloric absorption
- Promoting satiety and slowing digestion (Correct answer)
- Boosting testosterone levels
- Accelerating fat oxidation directly
Correct answer: Promoting satiety and slowing digestion
Fiber slows gastric emptying, prolongs feelings of fullness, and helps stabilize blood sugar — all supportive of weight loss.
Question 3: A caloric deficit of approximately 3,500 calories is traditionally associated with losing how much weight?
- 0.5 lb
- 1 lb (Correct answer)
- 2 lb
- 5 lb
Correct answer: 1 lb
The long-standing estimate is that a 3,500-calorie deficit corresponds to roughly 1 pound of fat loss.
Question 4: Which macronutrient has the highest thermic effect of food (TEF)?
- Carbohydrates
- Fats
- Protein (Correct answer)
- Alcohol
Correct answer: Protein
Protein has a TEF of 20–35%, meaning your body burns significantly more calories digesting it than carbs or fat.
Question 5: What does BMR stand for in the context of weight loss?
- Body Mass Ratio
- Basal Metabolic Rate (Correct answer)
- Blood Meal Response
- Balanced Macro Requirement
Correct answer: Basal Metabolic Rate
Basal Metabolic Rate is the number of calories your body burns at complete rest to maintain basic functions.
Question 6: Which type of exercise is most effective for preserving lean muscle mass during a caloric deficit?
- Long-duration steady-state cardio
- Yoga and stretching
- Resistance/strength training (Correct answer)
- Low-intensity walking only
Correct answer: Resistance/strength training
Resistance training provides the mechanical stimulus needed to preserve muscle tissue when calories are restricted.
Question 7: Sleep deprivation most directly affects weight loss by altering levels of which two hormones?
- Testosterone and estrogen
- Ghrelin and leptin (Correct answer)
- Cortisol and adrenaline
- Insulin and glucagon
Correct answer: Ghrelin and leptin
Poor sleep raises ghrelin (hunger hormone) and lowers leptin (fullness hormone), increasing appetite and cravings.
Weight Loss Knowledge 2
Which hormone signals fullness to the brain after eating?