Cedars Sinai

Cholesterol is a waxy substance found in the blood. The body needs cholesterol to build healthy cells. But high levels of cholesterol can...

Hashimoto's disease is an autoimmune disorder affecting the thyroid gland. The thyroid is a butterfly-shaped gland located at the base of...

Graves' disease is an immune system condition that affects the thyroid gland. It causes the body to make too much thyroid hormone. That...