The chemical reactions and pathways resulting in the formation of cholesterol, cholest-5-en-3 beta-ol, the principal sterol of vertebrates and the precursor of many steroids, including bile acids and steroid hormones. [GOC:ai]
The chemical reactions and pathways resulting in the formation of estrogens, C18 steroid hormones that can stimulate the development of female sexual characteristics. Also found in plants. [ISBN:0198506732]
The chemical reactions and pathways involving androgens, C19 steroid hormones that can stimulate the development of male sexual characteristics. [ISBN:0198506732]