Uncorrected thyroid dysfunction during pregnancy has adverse effects on fetal and maternal well-being but may also extend beyond pregnancy and delivery to affect neuro-intellectual development in the early life of the child. This book addresses a wide range of topics relating to thyroid dysfunction during pregnancy; including physiological changes thyroid function tests screening for maternal thyroid dysfunction iodine nutrition thyrotoxicosis hypothyroidism autoimmune thyroiditis infertility and miscarriage post-partum thyroiditis as well as thyroid nodules and thyroid cancer. While it is primarily intended for practitioners it will also be suitable for upper graduate students.