Appetite Week 9

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Questions and Answers

What is the basic cause of obesity according to the text?

Lack of physical activity

Excessive energy intake compared to energy expenditure (correct)

Increased consumption of processed foods

Genetic disposition to become obese

What is the obesogenic environment characterized by?

Reduction in physical activity and increased consumption of processed foods (correct)

Limited availability of processed foods

Increased opportunities for physical activity

High genetic disposition to become obese

How has physical activity changed in Western nations over the last 40 years?

Shifted towards more physically demanding occupations

Reduced due to increasing car usage and sedentary leisure activities (correct)

Remained constant despite technological advancements

Increased due to more active leisure options

What is a consequence of the shift in the type of work towards service industries?

People expend less energy at work on average (C) Signup and view all the answers

What percentage of trips outside the home are made on foot or bicycle in the US?

Less than 10% (A) Signup and view all the answers

What is the impact of urban design on obesity rates according to the text?

Urban design has an impact on obesity rates, influencing physical activity (C) Signup and view all the answers

What has contributed to the obesogenic environment over the last four decades?

Reduction in physical activity and increased availability of processed foods (D) Signup and view all the answers

What has led to the reduction in physical activity in Western nations?

Increasing car usage and sedentary leisure activities (D) Signup and view all the answers

What is the relationship between amount of time spent asleep and weight gain according to the US nurses study?

There is a linear relationship between amount of time spent asleep and weight gain (A) Signup and view all the answers

What is the effect of sleep deprivation on metabolism?

Reduces plasma leptin levels and increases ghrelin (C) Signup and view all the answers

What is the average sleep duration in the US according to a recent survey?

7 hours 26 minutes (B) Signup and view all the answers

What is the impact of climate control changes on obesity?

Climate control changes mirror the rise in obesity (B) Signup and view all the answers

What is the effect of quitting smoking on weight gain?

Ex-smokers tend to gain weight (B) Signup and view all the answers

What maternal factors increase the risk for obesity later in life?

Maternal metabolic abnormalities, excessive fat intake, gestational diabetes (D) Signup and view all the answers

What is the impact of certain chemicals on weight gain?

Certain chemicals can result in weight gain (C) Signup and view all the answers

What is the cause of increasing body weight over the last 40 years according to the conclusion?

A complex phenomenon with multiple contributing factors (A) Signup and view all the answers

Which factor is moderately correlated with obesity and particularly pronounced in children?

TV watching (C) Signup and view all the answers

What is a consequence of excess sugar intake?

Spiking blood sugar (A) Signup and view all the answers

What contributes to hypertension and is a risk factor for Type II diabetes and osteoporosis?

Excess salt intake (A) Signup and view all the answers

What has been increasing in the last 40 years, indicating environmental factors rather than genetic changes as the cause?

Obesity (C) Signup and view all the answers

What led to the loss of school exercise programs and the introduction of fast food in school canteens?

Cost-cutting measures in public education (D) Signup and view all the answers

What is the main leisure activity for Westerners, with an increase from 13 to 26 hours per week since 1960?

TV watching (B) Signup and view all the answers

What is particularly targeted at children by advertising for unhealthy foods?

TV watching (B) Signup and view all the answers

What contributes to higher fat, sugar, and salt intake due to all adult members working?

Reliance on processed food (D) Signup and view all the answers

What has adverse effects on blood cholesterol and is highly palatable?

Processed foods (B) Signup and view all the answers

What contributes to reduced physical activity due to fear of crime in poor neighborhoods?

Fewer parks (C) Signup and view all the answers

What has led to the increase in portion sizes, resulting in higher calorie intake?

Supersizing marketing ploy (D) Signup and view all the answers

What is a common marketing ploy that results in higher calorie intake?

Supersizing (C) Signup and view all the answers

What do migration studies show about US residents of African, Caribbean, and Latin American descent?

They have higher BMIs than their relatives in their countries of origin due to differences in diet and exercise. (D) Signup and view all the answers

What is the role of genetic influences in predisposing to obesity?

They operate on factors such as energy balance, feeding behavior, and fat cell numbers and differentiation. (A) Signup and view all the answers

What increased risk of obesity is associated with having two obese parents?

80% (A) Signup and view all the answers

What do critics question about the obesity epidemic?

Its projected death rates and the focus on food and environmental factors as the sole cause of obesity. (C) Signup and view all the answers

At what BMI does excess mortality occur according to reanalysis of databases?

30+ (B) Signup and view all the answers

What do critics argue about the focus on food and environmental factors as the cause of obesity?

It is too simplistic, based on correlational evidence and inconsistencies in the data. (B) Signup and view all the answers

What is correlated with the rise in obesity according to the text?

Home temperature, age at first child, quitting smoking, chemical pollutants, air conditioning, and hours awake. (B) Signup and view all the answers

What do recent findings suggest about the relationship between lack of sleep and obesity?

Lack of sleep may precede obesity. (C) Signup and view all the answers

What do critics argue about the usual culprits of obesity, such as overeating and inactivity?

They do not fully explain the rising obesity rates. (D) Signup and view all the answers

What is the increased risk of chronic diseases associated with a BMI of 25+ according to reanalysis of databases?

An increased risk of chronic diseases such as diabetes and heart disease. (D) Signup and view all the answers

What do critics argue about the claim that kids will likely lead shorter lives due to obesity?

It is based on projections and uncertainties about the long-term outlook for children with obesity-related complications. (C) Signup and view all the answers

Study Notes

Obesity: Genetic Predisposition, Environmental Factors, and Controversies

Genetic differences between populations result in varying susceptibility to the obesogenic environment due to diet and exercise.
Migration studies show that US residents of African, Caribbean, and Latin American descent have higher BMIs than their relatives in their countries of origin due to differences in diet and exercise.
The obesogenic environment, influenced by various environmental factors, interacts with genetic predisposition to weight gain.
Genetic influences predisposing to obesity operate on factors such as energy balance, feeding behavior, and fat cell numbers and differentiation.
Studies indicate that genetic factors play a significant role in an individual's risk of obesity, with a 40% increased risk with one obese parent and an 80% increased risk with two obese parents.
Critics question the consequences and causes of the obesity epidemic, challenging its projected death rates and the focus on food and environmental factors as the sole cause of obesity.
Reanalysis of databases suggests that excess mortality only occurs at a BMI of 30+, but increasing BMI (25+) is associated with an increased risk of chronic diseases such as diabetes and heart disease.
Critics argue that the focus on food and environmental factors as the cause of obesity is too simplistic, based on correlational evidence and inconsistencies in the data.
The claim that kids will likely lead shorter lives due to obesity is based on projections and uncertainties about the long-term outlook for children with obesity-related complications.
Critics argue that the usual culprits of obesity, such as overeating and inactivity, do not fully explain the rising obesity rates, and studies have failed to demonstrate benefits for exercise in children.
Factors such as home temperature, age at first child, quitting smoking, chemical pollutants, air conditioning, and hours awake are correlated with the rise in obesity.
Obese individuals sleep less, and recent findings suggest that lack of sleep may precede obesity.

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Description

Explore the complex interplay of genetic predisposition, environmental factors, and controversies surrounding obesity in this insightful quiz. Delve into the influence of genetic differences, migration studies, obesogenic environments, and the role of critics in shaping the discourse around obesity. Gain a deeper understanding of the multifaceted factors contributing to the obesity epidemic and the ongoing debates within the field.