What describes a relationship between leptin and energy balance?

Question

What describes a relationship between leptin and energy balance? ​

Quizplus · Accepted Answer

Leptin is a hormone produced by fat cells that regulates energy balance by suppressing appetite and increasing energy expenditure. Blood levels of leptin usually correlate directly with body fat, meaning that the more fat someone has, the more leptin they produce. This feedback loop helps maintain energy balance by increasing appetite and metabolism when weight is lost and decreasing them when weight is gained. Option A is incorrect because fat cell sensitivity to leptin is actually lower in obese people, which contributes to their resistance to its appetite-suppressing effects. Option B is incorrect because while some obese people may have a deficiency in leptin production, this is not a characteristic of all obese people. Option D is incorrect because the major functions of leptin are actually the opposite of what is stated - it decreases hunger and increases metabolic rate.

What Describes a Relationship Between Leptin and Energy Balance? ​

What Describes a Relationship Between Leptin and Energy Balance?