UNIT 8 weight management Flashcards
What has obesity reached?
Epidemic proportions
This indicates a widespread issue affecting a large portion of the population.
What causes obesity?
A complex range of factors that vary dramatically across populations
Factors include genetics, environment, culture, and lifestyle choices.
What are the components of proper weight management?
- A healthy relationship with food
- Physical activity
- Psychological control
- Environmental control
These components work together to create a sustainable weight management strategy.
True or False: Short-term solutions to weight issues are often effective in the long term.
False
Short-term solutions typically do not lead to lasting weight loss.
Fill in the blank: Fad diets are not usually _______.
sustainable
Fad diets often lead to temporary weight loss but do not promote long-term health or weight maintenance.
What does BMI stand for?
Body Mass Index
BMI is a measure that uses height and weight to estimate body fat.
What is the BMI classification for underweight?
< 18.5
Individuals with a BMI less than 18.5 are classified as underweight.
What is the normal range for BMI?
18.5 - 24.9
This range indicates a healthy weight.
What BMI value indicates overweight?
≥ 25.0
A BMI of 25 or higher is considered overweight.
What is the BMI classification for preobese?
25.0 - 29.9
This classification is for individuals who are approaching obesity.
What BMI value indicates obesity?
≥ 30.0
A BMI of 30 or higher is classified as obese.
What is the classification for Obese class I?
30.0 - 34.9
This is the first tier of obesity classification.
What is the classification for Obese class II?
35.0 - 39.9
This is the second tier of obesity classification.
What is the classification for Obese class III?
≥ 40.0
This is the most severe classification of obesity.
What is the formula for calculating BMI?
weight (in kg) / height² (in meters)
This formula is used to derive the BMI from weight and height.
What are some limitations of the BMI formula?
Does not consider body composition and distribution of weight
BMI is a useful measure, but has limitations regarding individual body characteristics.
True or False: Data for calculating BMI is difficult to obtain.
False
Data for BMI calculation is generally easy to obtain.
What is the BMI classification for individuals with a BMI of 23?
Normal range
A BMI of 23 falls within the normal classification.
What percentage of adults in Canada are overweight or obese as of 2017?
Approximately 64%
This statistic highlights the significant prevalence of overweight and obesity among the adult population in Canada.
What percentage of children aged 5-17 in Canada are overweight or obese as of 2017?
Approximately 30%
This figure indicates the concern regarding childhood obesity rates in Canada.
What is the percentage of Indigenous adults in Canada that are overweight or obese as of 2017?
Approximately 67%
This statistic points to a higher prevalence of obesity among Indigenous adults compared to the general adult population.
What has happened to the worldwide prevalence of obesity between 1980 and 2014?
It more than doubled
This significant increase underscores the global obesity epidemic recognized by health organizations.
True or False: Many organizations now recognize obesity as a chronic disease.
True
This recognition reflects a shift in understanding the nature of obesity and its long-term health implications.
How much can obesity reduce life expectancy?
Up to 20 years
Obesity is linked to various health complications that can lead to premature mortality.
What percentage of premature adult deaths is caused by obesity?
1/10
This statistic highlights the significant impact of obesity on overall mortality rates.
What cardiovascular condition is obesity associated with?
Increased risk of cardiovascular disease (CVD)
CVD includes conditions such as heart disease and stroke.
Name two diseases that obesity increases the risk for.
- Type 2 diabetes
- Certain cancers
Obesity is a major risk factor for metabolic and oncological diseases.
What are some immune system-related risks associated with obesity?
Impaired immune function
This can lead to increased susceptibility to infections and other diseases.
List three disorders associated with obesity.
- Kidney diseases
- Gallbladder diseases
- Bone and joint disorders
These conditions can significantly affect quality of life.
True or False: Obesity is associated with psychological disorders.
True
Mental health issues can arise as a result of obesity-related stigma and health problems.
What reproductive risks are associated with obesity?
Increased pregnancy risks
This can include complications such as gestational diabetes and hypertension.
Fill in the blank: Obesity is associated with _______ and incontinence.
Impotence
This refers to erectile dysfunction in men and can be influenced by obesity.
What other weight category poses health risks besides obesity?
Very low weight
Both ends of the weight spectrum can lead to serious health complications.
What is essential fat?
Fat necessary for reproductive capacity and health
Essential fat makes up about 3% of male body weight and 12% of female body weight.
What percentage of body weight does essential fat constitute in males?
3%
What percentage of body weight does essential fat constitute in females?
12%
Is essential fat associated with health risks?
No
What type of fat is referred to as ‘risky’ fat?
Non-essential fat
What are the two types of ‘risky’ fat?
- Visceral fat
- Subcutaneous adipose fat
What factors influence the amount of ‘risky’ fat?
- Sex
- Age
- Diet
- Activity
How is ‘risky’ fat mobilized?
By energy demand
What determines the distribution of body fat?
Hormonal factors
What are the two body shape classifications related to fat distribution?
- Android
- Gynoid
What shape do overweight men typically exhibit?
Apple (android) shape
What shape do overweight women typically exhibit?
Pear (gynoid) shape
What is the formula for calculating BMI?
BMI = weight in kilograms / (height in meters)²
BMI is a simple calculation used to assess body weight relative to height.
List four methods for evaluating body weight and composition.
- Height-weight charts
- Hydrostatic weighing
- Skinfold measurements
- Circumference measurements
These methods provide different ways to assess body composition.
What is hydrostatic weighing?
A method that measures body composition based on water displacement
Hydrostatic weighing is often considered a gold standard for body composition analysis.
What do skinfold measurements assess?
The thickness of skinfolds at specific body sites to estimate body fat percentage
This method relies on calipers to measure subcutaneous fat.
What is the purpose of circumference measurements?
To evaluate body fat distribution and overall body composition
Common sites for measurement include the waist, hips, and limbs.
True or False: BMI is the most complex method for assessing body weight.
False
BMI is the simplest and most broadly applicable method.
What is electrical impedance used for?
To estimate body composition by measuring resistance to electrical flow
This method provides a quick assessment but can be less accurate than other methods.
What scanning methods are used for evaluating body composition?
MRI and other imaging techniques
Scanning methods provide detailed images and can assess body fat distribution.
Fill in the blank: The simplest and most broadly applicable method for evaluating body weight is _______.
[BMI]
BMI is widely used due to its ease of calculation and general applicability.
What are the main sources of energy intake?
Carbohydrates, lipids, proteins, alcohol
These macronutrients provide the calories necessary for energy balance.
What percentage of energy expenditure is attributed to basal metabolism?
60-75%
Basal metabolism refers to the energy required for basic physiological functions at rest.
What percentage of energy expenditure is attributed to thermogenesis?
10%
Thermogenesis includes the energy used for heat production in the body.
What percentage of energy expenditure is attributed to physical activity?
15-30%
This includes all voluntary movements and exercise.
What is the Energy Balance Equation?
Energy input - energy output = +ve/-ve energy balance
This equation helps to understand weight gain or loss.
Approximately how many kilocalories are in one pound of fat?
3500 kcal
This is a rough estimate and not an exact science.
Fill in the blank: The three main macronutrients that provide energy are carbohydrates, lipids, and _______.
proteins
Proteins are essential for various bodily functions, including muscle repair and growth.
True or False: Alcohol contributes to energy intake.
True
Alcohol provides calories, contributing to overall energy balance.
What is the role of energy balance in determining weight?
It determines weight gain or loss based on the difference between energy intake and energy expenditure
A positive energy balance leads to weight gain, while a negative balance leads to weight loss.
What is Basal Metabolic Rate (BMR)?
The number of calories burned at rest to maintain basic bodily functions
BMR is influenced by factors such as genetics, lean muscle mass, exercise, height, weight, and sex.