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 pain in the left lower abdomen is an intermittent cramp-like pain. Nausea, vomiting, and diarrhea or constipation accompanies this. As the obstruction worsens one may experience inability to pass gas or stools and may develop a swelling in the abdomen. This pain may also spread and become more generalized.