Chapter 7 Flashcards
Health Problems in Overweight/Obese Individuals
Increased risk for
* cardiovascular disease
*type 2 diabetes
* respiratory issues (e.g., sleep apnea) * gallbladder disease
*osteoarthritis
* menstrual irregularities
* various cancers (e.g., endometrial, breast, and colorectal).
Weight Stigmatization
Overweight and obese individuals often face social stigma, which can negatively impact mental health, leading to stress, anxiety, and depression
Consequences of Being Underweight
Increased risk of malnutrition, weakened immune system, osteoporosis, and fertility issues
ATP Generation from Food
Energy from food is converted into ATP through cellular respiration, involving glycolysis, the citric acid cycle, and the electron transport chain
Components of Energy Expenditure
Basal Metabolic Rate (BMR)
Physical activity
Thermic effect of food (TEF)
BMR
Basal metabolic rate, Energy used for basic body functions.
Highest proportion of TOTAL ENERGY
Physical activity
Energy used during exercise and daily activities
TEF
Thermic effect of food, Energy required to digest and absorb food
Storage of Excess Dietary Energy
Excess energy is stored as glycogen in the liver and muscles or as fat in adipose tissue
Factors Influencing Energy Expenditure
Include age, gender, muscle mass, physical activity, hormones, and genetics
Methods of Measuring Energy Expenditure
Techniques like direct and indirect calorimetry, doubly-labeled water, and respiratory quotient are used to estimate energy expenditure
Lean vs. Fat Tissue
Lean tissue (e.g., muscle) burns more calories than fat tissue (adipose tissue), influencing metabolism and body composition
Estimating Body Fat Percentage
Methods include skinfold measurements, bioelectric impedance, DEXA scans, and underwater weighing
Strengths of BMI:
Easy and widely used
Limitations of BMI
Doesn’t account for muscle mass, age, or fat distribution
Visceral Fat
(around organs) poses greater health risks (e.g., cardiovascular disease)
Subcutaneous Fat:
(beneath the skin)
Genetic Factors
Influence metabolism and fat storage
Lifestyle Factors
(diet, activity levels) significantly affect body weight
Healthy Weight Strategies
Include balanced nutrition, regular physical activity, and behavioral changes aimed at long-term maintenance
Weight-Loss and Maintenance Strategies
Gradual weight loss, sustainable diets, and regular exercise help in maintaining healthy body weight
Healthy Diet
balanced, flexible, and long-term
Fad Diet
often restrictive, unsustainable, and sometimes harmful
Low-Calorie Diet Characteristics
Should include a variety of nutrient-dense foods, focus on gradual weight loss, and avoid extreme calorie restrictions
Effectiveness of Weight-Loss Diets
Diets focusing on balanced macronutrients and gradual changes are more effective than extreme, unsustainable options
Weight-Loss Drugs
Some medications (e.g., Orlistat, Ozempic) aid weight loss but may have side effects and are recommended for individuals with significant health risks
Bariatric Surgery
Used for individuals with severe obesity, it carries risks (e.g., infections, nutritional deficiencies) but can lead to significant weight loss and health improvements