If every doctor was educated on this book then millions of people wouldn't have to suffer without getting a proper diagnosis and treatment of hypothyroidism. T3 has been controversial to doctors and endocrinologists for decades, even though it has been show to be necessary for thyroid patients who can't convert T4 to T3. It is HIGHLY IMPORTANT that you educate yourself if you have hypothyroidism. Your doctor will tell you that if your TSH is below 10 then you don't have hypothyroidism. THIS IS WRONG. Read Paul Robinson's books to understand why.