Creatinine levels can be lowered by treating underlying causes such as high blood pressure or diabetes with diet, exercise or medication, according to WebMD. A high level of creatinine, which is filtered from the blood in healthy individuals, indicates kidney disease.
Creatinine is a waste product produced by normal muscle breakdown, filtered through the kidneys and excreted in urine. The kidneys of a young, healthy individual filter about 125 milliliters of blood per minute, depending on age, size and sex, states WebMD.
The symptoms of kidney dysfunction can be alleviated with medications for high blood pressure or high cholesterol, or drugs to treat anemia or swelling in the legs. Kidney patients may also be prescribed supplements for calcium or vitamin D, or drugs to reduce phosphates in the blood and protect the blood vessels from calcium deposits, explains Mayo Clinic. A doctor may recommend a low-protein diet to reduce waste products in the blood.
Kidney disease, which can be acute (sudden) or chronic, may continue to worsen even after the underlying cause has been brought under control. Advanced kidney disease can be treated with dialysis or a kidney transplant. A person with complete kidney failure can survive only a few weeks, according to Mayo Clinic.