Over a month, Jordan takes in about 300 more calories each day than Jordan uses. What is the most likely body-weight trend?

For several weeks, Maya uses more calories through daily living and activity than she takes in. Which energy-balance result is most likely?

A student takes in about 2,200 calories daily and uses about 2,200 calories daily for a month. What does this pattern describe?

Riley keeps eating the same amount but stops walking to school and spends much more time sitting. If this continues, what change in energy balance is most likely?

On a typical day, Devon takes in 1,800 calories and uses 2,100 calories. What is Devon's daily energy balance?

A student has been maintaining body weight. They begin adding a 300-calorie snack every day without changing activity. What is the likely effect if the pattern continues?

Kai usually uses about 2,600 calories daily but takes in about 2,400 calories daily. Which change would bring Kai's energy balance back to even?

In nutrition, what does a calorie measure?

What does metabolism include?

What does basal metabolic rate describe?

For most people, which part of daily energy use is the largest?

A student says, “Metabolism is just how fast food is digested.” Which example shows metabolism that is not digestion?

Two students weigh the same, but one has more muscle and less body fat. What term describes this difference?

Why can two people with the same body weight have different body compositions?

A health assessment reports that a student's fat mass decreased while fat-free mass stayed the same. What changed?

A student loses 5 pounds. Why does that number alone not show whether body fat decreased?

Which result describes body composition rather than body weight alone?

A 16-year-old trains for soccer two hours each day, while a classmate of similar size does not train. Why does the player generally need more energy?

During summer break, Morgan stops participating in a daily dance program but keeps the same eating pattern. What happens to Morgan's energy needs?

Why can calorie needs differ between two people who are the same age?

A test shows that Sam has a higher basal metabolic rate than Lee. What does that mean?

An ad promises “Lose 10 pounds every week with this pill, no eating or activity changes needed.” What warning sign does this claim show?

A weight-loss supplement says, “Because it is natural, it cannot cause side effects or interact with medicine.” What is the best evaluation?

An ad for a dietary supplement says, “FDA-approved to cure obesity.” What is wrong with this claim?

A website supports a weight-loss powder using only before-and-after stories from customers. What evidence would best test whether the powder is safe and effective?