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.
The following conditions often cause lower left abdominal pain 1  : Appendicitis. 2  Cancer. 3  Crohn's disease. 4  Diverticulitis. 5  Problems with the cervix, such as a cervical infection, inflamed cervix or growths on the cervix. 6  Endometriosis. 7  Inguinal hernia. 8  Injury.