Furthermore, studies have also uncovered some “neuro-protective” effects of oestrogen on the DA NT system, with the hormone exhibiting an ability to inhibit DA D2 receptor, along with 5-HT1A receptor-induced mediated behavioural changes in sensorimotor gating/information processing, of which has previously been found deficient in people with mental illnesses [66,67]. The gene discussed is HTR1A; the disease is psychiatric disorder.