Obesity Flashcards
Obesity Facts (3)
- Increased prevalence of overweight children and families in the U.S.
- Obesity now affects 18% of all children ages 6-11 years
- Adolescents obesity has increased to nearly 21%
Obesity Contributing Factors (8)
- Working families
- Decrease in family income
- Scholastic pressure on children today
- Sedentary activities (gaming)
- Food availability
- Eating patterns
- Media
- Ethnic diversity
Childhood obesity prevalence (6)
- Remains high→ Has remained fairly stable at about 17% in youth in the United States
- More than doubled in children and quadrupled in adolescents
Significant racial and age disparities among children
- Hispanic children - 21.9%
- Non Hispanic Black – 19.5%
- Non Hispanic White – 14.7%
- Asian – 8.6%
How is obesity measured?
BMI!
BMI (5)
- BMI is a measure to determine childhood overweight and obesity
- Calculated using weight and height
* Weight in pounds/height in inches/height in X 703 - BMI is an indicator of body fatness – it does not measure body fat directly
- BMI levels correlate with body fat
- Plot using age and sex specific percentile charts for children; CDC Growth charts
Definition of Overweight
Defined as a BMI at or above the 85th percentile and lower then the 95th percentile (85th to 94th%) compared to children of the same age and sex
Definition of Obesity (4)
- Defined as a BMI at or above the 95th percentile for children of the same age and sex OR BMI > 30kg/m2 whichever it lower
- Weight for height is > 95%
- Greater than the 99th % severe obesity
- Values for children < 2 years of age BMI normative values are not available
How do you measure for birth-23 months?
Should be monitored and plotted on WHO normative growth charts at every health care visit
How do you measure for 2-19 year olds? (3)
- CDC growth charts used to determine the corresponding BMI for age and sex percentile
* Children and adolescents 2yr-19yrs - BMI does not directly measure body fat
- High BMI predicts future adiposity and morbidity
* Good indicator of body composition
Definition of underweight
<5% BMI
Definition of healthy weight
BMI 5%-84%
obesity epidemiology (4)
- Prevalence of obesity is on the rise in developed countries
- Hispanics, African-Americans and Native Americans are disproportionately affected
- Lower education and higher poverty levels = greatest risk
- Prevention and Treatment of obesity critical to avoid health risks
Obesity Clinical Presentation (2 scenarios)
Usually present to provider in 2 scenarios:
1. Parents concerned “overweight” or “will become overweight”
- Parents do not recognize that their child is overweight (more common because perceived as big=healthy)
*Lack of awareness
*Parents do not know risks
Cultural
fDenial
Pathophysiology of obesity (4)
- Evolving and the risk factors are multifactoral
- Neurohormones affect appetite, satiety, and balance between fat storage and energy production
- Obesity results when energy intake exceeds expenditure
- Excess calories stored = obesity
Enivornmental pathophysiology of obesity (6)
- Obseogenic environment- facilitates unhealthy behaviors
- Interact with genetics and lead to increase % of obese children
- Easily accessible calorically dense, large portion foods
- Less physical activity – sedentary lifestyle
- Safety concerns with outdoor activity
- TV, Video games and school pressure