Possible causes of Kidney-Yang deficiency include congenital insufficiency of endowment (poor innate constitution and functioning), old age and frailty, prolonged illness injuring Kidney-Yang, and over-exertion of housework. 1. Congenital deficiency of kidney yang can be characterized by slow growth and development, fear of cold, and lack of spirit. 2. With the growth of age, yang is gradually weakened, manifested as frigid libido, frequent urination at night, sallow color, waist and knee pain and other symptoms. 3. Long-term illness depletes the body’s yang qi, kidney yang insufficiency, there may be fear of cold, cold hands and feet, dizziness, fatigue (mental exhaustion, physical weakness), white color, weak pulse and other manifestations. 4. Unrestrained sexual intercourse will excessively deplete the essence of the kidneys, and if the yang is damaged over time, there may be frequent urination, loose stools, impotence, spermatorrhea, premature ejaculation for men, and leucorrhea, dysmenorrhea, infertility, etc. If you feel unwell, please consult a doctor promptly. If you feel unwell, please consult a doctor in time for standardized treatment.