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 Bowel cancer. 2  The affected area can cause pain in the left abdomen, which results in constipation, loss of appetite and feeling weak. 3  Crohns disease. 4  This can give rise to left abdominal pain, if it affects the sigmoid colon. 5  Crohnâs disease is often confused with other abdominal pain.