Chapter 45 Obesity Flashcards
(381 cards)
What is obesity?
An excessively high amount of body fat or adipose tissue
Why is obesity considered a global problem?
It is a major risk factor for leading causes of death, including type 2 diabetes, heart disease, and certain cancers
What are some common problems associated with being overweight?
- Problems with mobility
- Sleeping issues
- Affected health
What emotional issues can arise from obesity?
- Altered body image
- Depression
- Low self-esteem
- Withdrawal from social interaction
How can attitudes about obesity affect individuals?
They can create biases and discrimination against people who are obese
How should obesity be viewed and treated?
As a chronic disease, similar to diabetes and hypertension
Where are obesity rates highest in the United States?
- The South
- The Midwest
Which racial and ethnic groups have higher obesity rates?
- Blacks
- Hispanics
What demographic factors contribute to higher obesity rates?
- Lower-income
- Less-educated Americans
At what age can obesity begin in children?
As early as age 2 to 5
What is a key part of addressing the obesity epidemic?
Reversing the childhood obesity crisis
What type of disease is obesity classified as?
A complex, multifactorial disease
What causes the energy imbalance leading to obesity?
Taking in more calories than needed for the body’s physical and metabolic functions
What happens to fat cells in the body during obesity?
- Increase in the number of adipocytes
- Increase in their size (hypertrophy)
What is adipocyte hypertrophy?
A process by which fat cells can increase their volume several thousand times to accommodate large increases in lipid storage
What triggers preadipocytes to become adipocytes?
When the storage of existing fat cells is exceeded
What are the two main types of obesity?
Primary obesity and secondary obesity
Primary obesity is due to excess calorie intake over energy expenditure. Secondary obesity is caused by medical problems.
What causes secondary obesity?
Congenital conditions, endocrine disorders, CNS lesions and disorders, or drugs (e.g., corticosteroids, antipsychotics)
Secondary obesity can result from various medical issues.
How many genes have been linked to obesity?
Over 400 genes
These genes affect various factors like appetite, satiety, and body-fat distribution.
What is the role of the FTO gene in obesity?
Increased appetite and reduced satiety, leading to higher calorie intake
The FTO gene is associated with obesity and has a significant impact on eating behavior.
What is the impact of family history on obesity?
Increases the chance of developing obesity
Genetic predisposition plays a critical role in obesity risk.
What is the major site for regulating appetite?
Hypothalamus
The hypothalamus is essential for appetite control and energy balance.
What is neuropeptide Y?
A powerful appetite stimulant made in the hypothalamus
Imbalances in neuropeptide Y can lead to overeating and obesity.
Fill in the blank: The greatest increase in the number of fat cells occurs from _______.
infancy through adolescence
This period is crucial for fat cell development.