The Human Chorionic Gonadotropin / HCG Diet - also known as the Simeons Protocol - is a popular but controversial diet, and one that some thyroid patients are turning to for weight loss. It's no secret that many thyroid patients end up hypothyroid, with an underactive or non-functioning thyroid, a slower metabolism, and other hormonal imbalances that contribute to weight gain, or difficulty losing weight. If you have followed an HCG program, share your story and/or a review of the program you used -- including the pros and cons -- from your own unique perspective as a thyroid patient.