Blood vessel flushing is not beneficial to the body and may sometimes be harmful. Blood vessel flushing is a way that many older adults hope to protect their blood vessels during the change of seasons by using medications that dilate blood vessels and improve circulation in hopes that the state of the blood vessels will become better, but this procedure has been proven to be ineffective in many recent studies. For the elderly too much fluid input may lead to heart failure, kidney failure or damage to other organs, such as liver function, and most dangerously many elderly people will have allergic reactions to medications, which may have unanticipated consequences if they do.