By adjusting your diet you can improve leptin levels. Cut back on refined, processed, and fast foods. Examples are; high-glycemic-index foods are starchy foods such as white bread, potatoes, white rice and sugars. Eat more (relatively) low glycemic foods such as vegetables, fruits, lean meat, beans, and nuts.
Common symptoms of food poisoning include: 1  diarrhea. 2  nausea. 3  vomiting. abdominal cramps.  fever.
Vomiting is one of the signs of food poisoning caused by the following bacteria: 1  Salmonella. 2  Shigella. 3  Listeria. Campylobacter jejuni.  E. coli.