I appreciate how many sources you cited in this fact check, corroborating the point that this claim is false. I feel that it would prove the point further if you were to use direct quotes in your fact check, for example, from your CDC source: "A lifestyle with good nutrition, regular physical activity, and stress management supports a healthy weight. People who lose weight at a gradual, steady pace—about 1 to 2 pounds a week—are more likely to keep the weight off than people who lose weight quickly". This quote shows that the CDC believes that just one method of weight loss is not the best way to lose weight, nor is it healthy.