sentence: Steroids are lipids that have a special chemical structure.
sentences_before: Cholesterol is a molecule in cells. It is a type of lipid which is a fat or fat-like molecule. Cholesterol is a special type of lipid that is called a steroid.
sentences_after: This structure is made of four rings of carbon atoms.
concept_name: steroid
headings: Hypercholesterolemia Cholesterol
categories: Diseases and disorders of the cardiovascular system Diseases