Although eating and exercise are the key to losing weight, actually eating can't directly lose weight, but controlling the body's calorie intake through reasonable diet and exercise, so that the daily calorie intake is greater than the calories consumed in the body. So as to lose weight. Want to lose weight and eat less high-calorie food, greasy food, sweets, carbonated drinks and so on.

I understand the latter question as tonifying kidney, enriching blood and invigorating qi. Please look at the following two pictures: