First, physical decline, including muscle loss, muscle weakness, fat increase, physical strength and endurance decline, easy fatigue, fatigue.
Second, abnormal vasoconstriction, including hot flashes, sweating, insomnia, palpitations, irritability and other symptoms.
Third, sexual dysfunction, including decreased sexual desire, decreased sexual life times, erectile dysfunction, decreased semen volume, weak ejaculation, and disappearance of spontaneous erection in the morning.
Fourth, mental and psychological disorders, such as anxiety, depression, sleep disorders, memory loss, forgetfulness, inattention, fear and other symptoms.