Thyroid cancer is three times more likely to develop in women and is the sixth most common cancer type in women. The thyroid is an endocrine gland that is important for producing hormones that help to regulate metabolism processes. Papillary thyroid cancer is the most common form and is slow-growing. Follicular thyroid cancer is also slow- growing and, when combined with the papillary type, accounts for 95% of thyroid cancers. Hurthle cell cancer also arises from follicular cells but poses a greater risk of spreading than Follicular thyroid cancer. The remaining two types are both rare and are called medullary thyroid cancer and anaplastic thyroid cancer. These types can be more difficult to treat due to their fast-growing nature.