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.
1 Prostate; prostate infection can cause swelling and inflammation of the prostate gland. 2  The reason could be due to bacteria or viruses. 3  Usually very pain occurs in the lower left side abdomen. 4  Urinary tract infections; Urinary tract infections may cause pain in the lower left abdomen.