Many middle-aged and older adults experience lower back pain after sex. There are many causes of low back pain, some of which are related to sex. Here are some common causes and ways to deal with them. 1. Sexual life is too frequent. Too frequent sex may cause back pain, mainly due to excessive lumbar activity, causing lumbar muscle strain and soreness in the lumbar muscles. The correction method is simple, the two people choose the position according to physical strength, do not suddenly do a large movement. Beijing University Third Hospital Male Department Liu De Feng 2, itself suffering from lumbar muscle strain. Usually work, life for a long time sedentary people, lumbar muscles in a long-term tension, prone to soreness and pain discomfort, and make the lumbar support and stability is reduced. This type of people sex, may be because of stretching and acute lumbago attacks, and gradually developed into chronic lumbago. It is recommended that such people usually try to straighten the waist, avoid bending for too long; before sex, it is best to stretch the waist, pound the back, so that the waist to prepare; participate in more appropriate exercise to enhance the waist strength and stability, to reduce the occurrence of lumbar injury. 3, sex life suddenly interrupted. Some men in order to extend the time of sexual life, when the ejaculation will be deliberately interrupted sex, which in the long run easily lead to the reproductive system and pelvic congestion can not quickly subside, the seminal vesicles and other accessory organs are not emptied, may cause back pain. It is recommended to let nature take its course when having sex, and to work in harmony with the couple to achieve orgasm. 4, ageing causes androgen decline. Older men due to the decline of androgens, accompanied by muscle atrophy, in sexual life is also more prone to muscle ischemia, hypoxia and strain than young people, and thus pain. So elderly patients in sex should be measured, avoid excessive force and the pursuit of certain positions. 5, caused by certain diseases. Patients suffering from spinal joint and other disorders, such as lumbar disc herniation, may experience pain in the back during sex. Women with cervicitis also show symptoms of abdominal pain and lumbago, and the pain increases when penile penetration hits the cervix. Some men also experience post-coital pain due to prostate disease. These patients need to be seen actively to treat the primary disease.