Is dopamine a hormone?
Yes, it is a hormone which, by definition, is released by endocrine cells directly into the bloodstream, to have an effect elsewhere in the body. Dopamine is release by the hypothalamus to inhibit the release of prolactin in the anterior lobe of the pituitary gland. It is also released by the adrenal medulla to constrict blood vessels as part of the ‘fight or flight’ reaction. Dr Sarah Brewer, author of The Human Body (Quercus).
