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.
Some conditions leading to lower left and right abdominal pain in pregnant women are: 1  Acute appendicitis. 2  Gallbladder disease like cholecystitis or biliary colic. 3  Infection in the urinary tract. 4  Duodenal ulcer. 5  Miscarriage. 6  Constipation. 7  Braxton hicks contraction-painful contractions that resemble labor[ 4 ].