Since you're asking for scientific reasoning, let me tell you about it.

1 Your cooking method is steaming, and the vitamins in purple potatoes, such as A, D, E, and K, are not absorbed well, so you're eating a lot of calories and carbohydrates.

2 Humans need fat. Specifically the 9 fatty acids (amino acids), and your body can't make it. What to do? You have to get it from food, animal proteins and tofu have 9 of them. Less fat tells the body to store more under the skin.

3 Unsaturated fat and saturated fat deficiency. You may have heard that saturated fat is bad for your heart, but it's needed for vitamins A, D, E, and K. Without saturated fat, vitamin absorption is reduced.

The easiest way to lose weight is to eat a rich diet, not to eat fried oil, fast food and side dishes. Eat more fresh food.

The easiest way to lose weight is to eat a rich diet, without fried, oily, fast food and side dishes.