The kidneys maintain the blood creatinine in a normal range. Creatinine has been found to be a fairly reliable indicator of kidney function. Elevated creatinine level signifies impaired kidney function or kidney disease.
If you feel nauseated, here are some tips: 1  Avoid foods that are hard to digest. 2  If the smell of hot food makes you feel ill, try eating cool or cold meals. 3  Eat six small meals each day instead of three large ones. 4  Do not lay down after eating. 5  Rest with your head higher than your feet.
Hydration. Eating bad food can lead to food poisoning, which can cause bad stomach aches, diarrhea, and vomiting. After losing water and electrolytes such as potassium and sodium from vomiting and diarrhea, you'll feel weak.uring these circumstances, it's safe to avoid foods that are more difficult to digest, such as meat and fried foods. Eating heavy foods may cause you to release it. Eating is still necessary, so it will be best to eat after you've stop vomiting. Eat lighter foods such as jello or crackers.