Public Health & Obesity

When did obesity begin rising in the U.S.?

Rates increased sharply in the 1970s-1980s due to processed foods and sedentary lifestyles.

What does "epidemic" mean in public health?

A condition affecting large populations with rapid growth and major health impact.

Is obesity preventable?

Mostly yes, through lifestyle, environment, and policy changes.

What are the main causes of obesity?

Genetic, emotional, social, behavioral, and environmental factors.

What is the significance of "24th B.C." in obesity history?

Early records show obesity existed thousands of years ago.

Who is Marilyn Monroe in the context of body standards?

A historical example of beauty ideals different from today's thin/fit standards.

What are male beauty standards today?

Pressure toward muscularity, leanness, and ideal physique.

What are medical consequences of obesity?

Diabetes, heart disease, stroke, hypertension, sleep apnea, fatty liver, joint issues, certain cancers.

What is a chronic disease?

A long-lasting condition that progresses over time.

What are diseases of the heart?

Coronary artery disease, heart failure, arrhythmias, atherosclerosis.

How does obesity affect blood vessels?

Causes inflammation, plaque buildup, and high blood pressure.

What is fatty liver disease?

Excess fat stored in the liver, often linked to obesity.

What is the medical name for diabetes?

Diabetes mellitus.

What is ghrelin?

The hunger hormone that rises before meals and falls after eating.

How long does hunger signaling occur?

Ghrelin cycles every 3-4 hours.

What are eating disorders?

Anorexia, bulimia, binge-eating disorder, ARFID.

How do people lose weight?

Caloric deficit, physical activity, behavior change, medical support.

What is gastric bypass?

Bariatric surgery that reduces stomach size and reroutes intestines.

What medications are FDA‑approved for weight loss?

Orlistat, phentermine/topiramate, liraglutide, semaglutide, tirzepatide.

Can you over‑exercise?

Yes—can cause injury, fatigue, hormonal imbalance, weakened immunity.

Is losing weight always a good idea?

Healthy methods are good; extreme methods are harmful.

What are macronutrients?

Proteins, carbohydrates, fats.

What are the best protein sources?

Lean meats, fish, eggs, beans, Greek yogurt, tofu.

What are carbohydrates?

Sugars and starches; simple carbs give quick energy, complex carbs give sustained energy.

What is a food desert?

An area with limited access to affordable, nutritious food.

How do you manage weight?

Balanced diet, exercise, behavior change, sleep, stress management, monitoring intake.

What physical activities should you do?

Aerobic exercise, strength training, flexibility work, daily movement.

What is sportification?

Turning physical activity into competitive sport.

How do emotions relate to obesity?

Stress, trauma, depression, and emotional eating influence weight.

What role does insurance play in obesity treatment?

Coverage varies; some plans cover treatment based on BMI and health conditions.

Why was BMI created?

As a population‑level measurement tool, not for diagnosing individuals.

What is the public health definition of obesity?

Excess body fat that increases risk for disease and reduces quality of life.

Why is obesity considered a public health issue?

It affects millions, increases healthcare costs, and contributes to chronic disease.

What is the difference between overweight and obesity?

Overweight = elevated weight; Obesity = excess fat with health risk.

What is the role of environment in obesity?

Food access, neighborhood safety, transportation, and marketing influence weight.

What is sedentary behavior?

Low-energy activities like sitting or screen time.

How does physical inactivity contribute to obesity?

Reduces calorie expenditure and weakens metabolic health.

What is moderate-intensity exercise?

Activities like brisk walking that raise heart rate but allow conversation.

What is vigorous-intensity exercise?

Activities like running that significantly increase heart rate and breathing.

What is metabolism?

The body's process of converting food into energy.

What is basal metabolic rate (BMR)?

Calories your body burns at rest to maintain basic functions.

What is energy balance?

Relationship between calories consumed and calories burned.

What is a calorie deficit?

Burning more calories than consumed, leading to weight loss.

What is leptin?

A hormone that signals fullness and helps regulate long-term weight.

What happens when leptin resistance occurs?

The brain doesn't receive fullness signals, increasing hunger.

What is insulin's role in weight?

Regulates blood sugar; high levels promote fat storage.

What is emotional eating?

Eating in response to feelings rather than hunger.

How does stress affect weight?

Raises cortisol, increasing appetite and fat storage.

What is weight stigma?

Negative attitudes toward people with obesity that harm mental and physical health.

How do social norms influence obesity?

Cultural expectations shape eating habits and body image.

What is food insecurity?

Limited or uncertain access to nutritious food.

What is the role of the FDA in obesity?

Approves medications and regulates food labeling.

What is SNAP?

A federal program providing food assistance to low-income individuals.

What is the purpose of nutrition labels?

Help consumers make informed food choices.

What is bariatric surgery?

Surgical procedures that help with weight loss by altering digestion.

What is gastric sleeve surgery?

Removes part of the stomach to reduce hunger and food intake.

What is the difference between gastric bypass and gastric sleeve?

Bypass reroutes intestines; sleeve reduces stomach size only.

What is a comorbidity?

A disease that occurs alongside another condition (e.g., obesity + diabetes).

What is waist circumference used for?

Measures abdominal fat and predicts disease risk.

What is body composition?

Ratio of fat mass to lean mass.

Why is BMI limited?

Doesn't measure fat directly and doesn't account for muscle or ethnicity.

What is the BMI obesity threshold?

BMI ≥ 30.

What is behavioral modification?

Changing habits to support healthier eating and activity.

Why is sleep important for weight management?

Poor sleep disrupts hunger hormones and increases cravings.

What is mindful eating?

Paying attention to hunger, fullness, and food choices.

What is self‑monitoring?

Tracking food intake, activity, or weight to improve awareness.

How does marketing influence obesity?

Promotes high-calorie foods and shapes consumer behavior.

What is the role of schools in obesity prevention?

Provide nutrition education and physical activity opportunities.

What is workplace wellness?

Programs that encourage healthy behaviors among employees.

How does socioeconomic status affect obesity?

Lower income often means less access to healthy food and safe exercise spaces.