Doing a job or other activity that requires long periods of sitting, heavy lifting, bending or twisting, repetitive motions, or constant vibration, such as using a jackhammer or driving certain types of heavy equipment
Smoking. People who smoke are more likely than people who don't smoke to have low back pain.
Being overweight. Excess body weight, especially around the waist, may put strain on your back, although this has not been proved. But being overweight often also means being in poor physical condition, with weaker muscles and less flexibility. These can lead to low back pain.
Having poor posture. Slumping or slouching on its own may not cause low back pain. But after the back has been strained or injured, bad posture can make pain worse. "Good posture" generally means your ears, shoulders, and hips are in a straight line. If this posture causes pain, you may have another condition such as a problem with a disc or bones in your back.
Being under stress. Stress and other emotional factors are believed to play a major role in low back pain, particularly chronic low back pain. Many people unconsciously tighten their back muscles when they are under stress.
Risk factors you might change with medical treatment