Johns hopkins brain scientists have hit on how and why some powerful drugs used for treating mental illnesses cause patients to gain so much weight that they often develop life - threatening complications such as diabetes and heart disease 07年2月12日报道，约翰霍普金斯大学脑科学家偶然发现用于治疗精神病的药物可使病人体重增加许多以致于病人病情发展成威胁生命的疾病如糖尿病和心脏病。
