There is a lot more to hypothyroidism than you have been led to believe and to say that eating too much leads to hypothyroidism is a lot more than over simplification, it is downright misleading and statements or indications of a link between obesity and hypothyroidism are speculative at best. While an unexplained weight gain may be a symptom of hypothyroidism, and such a symptom could lead to obesity, there is absolutely no shred of evidence to suggest that eating more food than needed can cause hypothyroidism...