Diabetes occurs when not enough insulin is made, or when the body is unable to use the insulin that is made. The three main types of diabetes are type 1, type 2, and gestational diabetes.

Diabetes insipidus is a condition caused by not enough antidiuretic hormone (ADH) in the body. ADH is also known as vasopressin. This is a hormone that helps the kidneys keep the correct amount of water in the body. The condition is also called “water diabetes.”

Puberty that happens late is called delayed puberty. This means a child's physical signs of sexual maturity don’t appear by age 12 in girls or age 14 in boys. This includes breast or testicle growth, pubic hair, and voice changes. These are known as secondary sexual characteristics.

Detailed information on diabetes, including type 1 diabetes, type 2 diabetes, teens and diabetes, and diet and diabetes

Detailed information on disorders affecting the thyroid gland, including hyperthyroidism (Graves disease) and hypothyroidism

Detailed information on disorders affecting the pituitary gland, including posterior anterior disorders and anterior pituitary disorders

Detailed information on disorders affecting calcium metabolism, including juvenile osteoporosis, hyperparathyroidism, hypoparathyroidism, and DiGeorge syndrome

Detailed information on disorders affecting the adrenal glands, including underactive adrenal glands (Addison's disease), overactive adrenal glands (Cushing's syndrome), and pheochromocytoma

Detailed information on anterior pituitary disorders, including hypopituitarism

Detailed information on the endocrine system, its anatomy and function, including a full-color, labeled illustration.