SMi Source Lesson Obesity

  • SMi Source lesson Obesity has the following microlearning topics

  • 1. Overview of Obesity

    2. Management of Overweight/Obesity

    3. The Weight-Loss Category

    4. Obesity Epidemic

  • Lesson Obesity teaches these concepts

  • Obesity, Overview of Obesity, Overweight/Obese Defined

    Obesity, Overview of Obesity, Body Mass Index

    Obesity, Overview of Obesity, Waist Circumference and Obesity

    Obesity, Overview of Obesity, Cause of Obesity

    Obesity, Overview of Obesity, U.S. Prevalence

    Obesity, Overview of Obesity, Contributing Factors to Overweight/Obesity

    Obesity, Overview of Obesity, Prevalence Trends of Obesity in the United States

    Obesity, Overview of Obesity, Genetics

    Obesity, Overview of Obesity, Behavior and Environment

    Obesity, Overview of Obesity, Health Consequences of Overweight and Obesity

    Obesity, Overview of Obesity, Interactive Exercise: Obesity Health Consequences

    Obesity, Overview of Obesity, Interactive Exercise: Overweight and Obese

    Obesity, Overview of Obesity, Benefits of Modest Weight Loss

    Obesity, Overview of Obesity, Social Implications of Overweight and Obesity

    Obesity, Overview of Obesity, Societal Consequences

    Obesity, Overview of Obesity, Risk Factors Associated with Being Obese or Overweight

  • Lesson Obesity addresses these key points

  • Overweight/Obese Defined

    • Ranges of weight shown to increase health problems
    • Defined by body mass index (BMI)
      • Overweight 25.0-29.9 kg/m2
      • Obese ≥ 30.0 kg/m2

    Body Mass Index

    • Calculated by dividing weight by height squared

    Waist Circumference

    • Important factor in determining overall health risk
    • Over 40 inches in men
    • Over 35 inches in women

    Cause of Obesity

    • Energy (E) imbalance
    • Energy needs vary by:
      • age
      • gender
      • body size
      • genetic factors
      • pathological conditions
      • activity
      • ambient temperature

    U.S Prevalence

    • Age ≥ 20 years (men & women)
      • 65% overweight
      • 30% obese

    Contributing Factors to Overweight/Obesity

    • Behavior & Environment
    • Genetics

    Prevalence Trends

    • Dramatic increase in obesity in United States
    • 1990, no states had obesity prevalence rates at or above 15 percent
    • 2005, no state had an obesity prevalence rate less than 15 percent


    • Rare Mutations (severe)
      • Alter proteins involved in regulation of food intake
    • Common variants
      • Predispose people to energy imbalance

    Behavior and Environment

    • A poor diet
    • Lack of physical activity
    • Larger portions
    • Soft drinks
    • Emotional factors
      • stress
      • boredom
      • depression
      • anxiousness
      • anger
      • fatigue
      • 'emotional eaters'

    Health Consequences of Overweight and Obesity

    • Body weight
    • Disease

    Increased risk for:

    • Hypertension
    • Type II diabetes
    • Coronary heart disease
    • Dyslipidemia
    • Stroke
    • Gallbladder disease
    • Osteoarthritis
    • Sleep apnea and respiratory problems
    • Some cancers (endometrial, breast, prostate and colon)
    • Reduced fertility


    • Secretion of leptin by adipose tissue


    • Increased triglycerides, decreased HDL levels, and abnormal LDL composition

    Type II diabetes

    • Elevated fat in plasma

    Coronary heart disease

    • Metabolic adaptations

    Interactive Exercise: Overweight and Obese

    • 25 kg/m2
    • 28 kg/m2
    • 30 kg/m2

    Benefits of Modest Weight Loss

    Reduces risk factors

    • Diabetes
    • Osteoarthritis
    • Cancer
    • Other chronic diseases

    Social Implications of Overweight and Obesity

    • Discrimination in the work place
      • Professional workers report more discrimination than nonprofessionals
    • Overweight and obese people are often discriminated against
    • Overweight and obese people are more likely to report institutional and day-to-day interpersonal discrimination

    Societal Consequences

    • Healthcare costs
    • Annual costs of overweight and obesity
    • United States ~ $117 billion in 2009
      • Overall healthcare costs
      • Excess weight > that of many other health risks

    Risk Factors Associated with Being Obese or Overweight

    • Poor diet
    • Lack of physical activity
    • Working varied shifts
    • Medical conditions and medications
    • Quitting smoking
    • Increasing age
      • Incidence of obesity in people over 60 years of age is 3 times that in 20 year olds
    • Genetic factors
    • Race
      • 30% of non-Hispanic white adults
      • 45% of non-Hispanic black adults
      • 37% of Mexican Americans
    • Lower socio-economic status