Can't say it's useless. Losing weight varies from person to person, but it is a healthy and safe way to lose weight healthily. Be sure to choose the method that suits you, and don't blindly follow suit. National Health Management Center: Healthy weight loss is what every dieter wants to do. If you want to have a slim figure, you must take appropriate measures. Don't act in a hurry. All kinds of weight loss methods and drugs have been here, and the ultimate harm is your body. Not only will the ideal of slim figure be reduced to ashes, but it will also endanger your health.