Apple tea, as a healthy drink, its weight-reducing effect comes from the following points:

1. Promote metabolism: Apple tea is rich in vitamin C, which can promote human metabolism, accelerate fat burning and help to lose weight.

2. Supplementary nutrition: Apple tea contains a variety of vitamins and minerals, which can supplement the nutrients needed by the body, eliminate malnutrition in the body and help maintain a healthy posture.

3. Suppress appetite: Polyphenols in apple tea can suppress appetite, reduce food intake, help control diet and achieve the goal of losing weight.

4. Promote defecation: The cellulose in apple tea can promote intestinal peristalsis, increase defecation times, and eliminate wastes and toxins in the body, which is beneficial to weight loss and health.

Generally speaking, apple tea can help reduce appetite and promote metabolism, thus helping to lose weight. However, you can't lose weight by apple tea alone. You also need to stick to a reasonable diet and moderate exercise.