Lower back pain can stem from a variety of sources. Broadly speaking, the 3 main causes of back pain are day-to-day strain, injury, and chronic conditions or illnesses. For the overwhelming majority of individuals, back pain at some point is unavoidable. In the United States, approximately eighty percent of the population deals with back pain at some point or another. Often the back pain experienced is non-specific lower back pain without any primary cause. One of the reasons for this is that going through day-to-day life individuals are bound to put a strain on the lower back, some do so more so than others whether through rigorous exercise or physical activity. However, those who lead inactive lives face their own set of risks when it comes to lower back pain as poor posture from being hunched over an office desk all day, for instance, can create other problems. Another factor that influences who is more susceptible to suffering lower back pain from day-to-day life lie in genetics. People have different quantities of nociceptive fibers in their lower back which are sensitive receptors that indicate pain to the brain. Individuals with more nociceptive fibers will experience more pain than those without, all other factors being equal. Injury is a common cause of lower back pain as well. This often comes from a distinct trauma like a collision, being struck or striking an object or person, or a swift jerking motion although there are many other ways to suffer an injury. Once more different lifestyles pose different risks, an individual who lives a more active life will likely be in more frequent situations where the risk of injury is present. Certain underlying conditions may also exacerbate the likelihood of suffering an injury. There are many chronic illnesses and conditions that can cause lower back pain including disc tears, spondylolisthesis, spinal stenosis, vertebral fractures, and scoliosis, among others. Lower back pain may be indicative of a more serious medical condition like a pinched nerve or diabetes.