All sorts of different studies are pointing to how lack of sleep damages brain cells. One recent study found that in mice 25% of certain brain cells died as a result of a prolonged lack of sleep. Other studies have found lower integrity white matter in the brain, possibly as a result of lack of sleep.
1 Food poisoning; food poisoning can also cause pain in the lower left abdomen. 2  Moreover, it can cause nausea, vomiting or diarrhea and fever. 3  Symptoms usually occur for 24-48 hours. 4  For some cases, need to be hospitalized.
Reproductive System Causes. Left lower abdominal and back pain in women could indicate a problem with the ovary or fallopian tube on that side. An infection, cyst or twisting of the ovary can cause severe pain that generally worsens over time. woman clutches her lower left back as if in some pain in that area. Photo Credit Wavebreakmedia/iStock/Getty Images. Experiencing pain in both your abdomen and back can be overwhelming and frightening. Pain in the left lower abdomen and back can signal a problem with any of a number of organs in the abdomen.