In line with the other presentations, causes of Hashimoto’s and other autoimmune diseases will be discussed. Treatments that include LDN will also be discussed. Hashimoto’s is often missed by standard doctors and endocrinologists because they feel there is nothing that can be done about it, which is, of course, clearly false. Studies show that lowering the autoantibodies against the thyroid tissue results in more beneficial effects than thyroid hormone replacement. Contrary to common dogma, Hashimoto’s is, however, not the most common form of hypothyroidism, but rather, it is just the easiest to diagnose. Other causes of hypothyroidism are much more common but just harder to diagnose and not taught in medical school or endocrinology residencies, so they are not considered by physicians and endocrinologist. Thus, they typically remain undiagnosed. LDN is also useful for these more common causes of hypothyroidism.