How does green tea extract aid in weight loss?

The correct answer highlights that green tea extract aids in weight loss primarily by increasing fat oxidation. Research has demonstrated that green tea, especially its primary active components known as catechins, can enhance the body's ability to burn fat for energy. This process occurs because catechins stimulate the pathways involved in fat breakdown and oxidation, particularly during exercise.

In addition, green tea extract is known to elevate the metabolic rate in the short term, which can contribute to weight loss. This increase in the rate of oxidation of fat means that the body is more efficient in utilizing fat stores as energy, particularly during periods of physical activity.

While carbohydrate metabolism and appetite reduction may play roles in overall weight management, the most established and supported mechanism of action related to green tea extract in the context of weight loss is its effect on fat oxidation. Enhanced fat oxidation helps not only in weight loss but can also improve body composition by decreasing body fat percentage. Thus, understanding this specific mechanism is crucial for recognizing how green tea extract can support weight management efforts.