Hi, There are many causes of low sex desire: Physical causes: medical diseases ( diabetes and neurological diseases), medications ( blood pressure medications, antihistamines and antidepressants), alcohol and smoking, urinary problem, spinal problem. Psychological causes: mental health problems, such as anxiety or depression, stress, guilt about enjoying sexual experiences, past sexual or emotional abuse, relationship issues. Let me know if you have any of such causes. In general to improve sex desire healthy mind and fit body are important. I recommend two capsules of Tentax Royale every night with one cup of milk to improve sexual desire. Also provide more information about your sex life. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. Ivan R. Rommstein, General Surgeon