在美國一項涉及1000萬人的調查研究中，陽痿在超過18歲的人羣中普遍流行。隨着年齡的增長，人體的血液供應改變、荷爾蒙變化、神經功能障礙和使用各種各樣的藥物，都會單獨或聯合起來導致陽痿的發生，所以，陽痿不應當只是認為是年齡老化的一個過程。
因此，對陽痿的病原學檢查引起足夠的重視，這樣才能夠制定有針對性的治療方案。--譯自《柳葉刀》 轉載請註明出處
Impotence is a highly prevalent condition occurring in 10 million American men over the age of 18 years. Alterations in vascular supply, hormonal changes with age, neurological dysfunction and the use of a variety of medications may combine and contribute to impotence. Impotence should not be considered a normal part of the aging process. Careful attention to evaluation for the aetiology of impotence will lead to making appropriate therapeutic choices.
