How do fat cells differ in healthy-weight individuals compared to those who are obese?

Obese individuals typically have larger fat cells, also known as adipocytes, as well as a greater overall number of these cells compared to healthy-weight individuals. This increase in size and number of fat cells is a common characteristic of obesity and contributes to the body's ability to store excess energy in the form of fat.

In healthy-weight individuals, fat cells tend to be smaller, reflecting a more balanced energy intake and expenditure. The presence of more and larger fat cells in those who are obese can contribute to metabolic complications and inflammatory responses that are commonly associated with obesity. Therefore, the correct answer emphasizes both the size and number of fat cells in obese individuals, illustrating the physiological differences between those who are obese and those who maintain a healthy weight.