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.
Among older people diverticulitis is the most common cause of pain in the left side of the abdomen. It occurs when a bulge develops in the wall of the left bowel, forming finger-like projections and causes nagging pains in the lower abdomen.ower Left Abdominal Pain. The lower left abdominal area is a common site of pain, especially among women and elderly people. This area includes structures located to the left of an imaginary line that runs vertically across the level of the belly button, and an imaginary horizontal line below the left lower ribs.