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.
Chocolate, caffeine and alcohol all cause the same problem. Also avoid foods that pack a lot of heat as well as cheeses and heavy meats (think nachos or beef chili, for example): These high-fat foods can take longer to digest and can irritate the lining of your stomach. For heartburn-free flavor, Koff recommends basil, cardamom, turmeric, cinnamon and rosemary.