Why are kidneys important? What do they do?
Kidneys do many amazing things within the body to maintain balance and adequate health. They work very hard and, even when damaged, will continue to compensate until they absolutely cannot function any longer.
Kidneys regulate the body's fluid levels, filter wastes and toxins from the blood, maintain a balance of essential minerals like sodium, potassium, and phosphorus, release renin - a hormone that helps regulate blood pressure, release epoetin - a hormone that directs the production of red blood cells, and activates vitamin D for healthy bones.
Therefore, diseased kidneys can cause high blood pressure, heart disease, heart attack and stroke, anemia, weakened bones, nerve damage (neuropathy), and kidney failure (also known as end-stage renal disease or ESRD).
Keeping kidneys healthy
The following are things we should all be doing, regardless of age, to keep our kidneys healthy and functioning properly:
Get yearly check-ups
Quit smoking
Stay well hydrated (at least 64 ounces of water daily, unless restricted by a provider)
Adhere to a balanced, heart-healthy diet
Exercise regularly
Control weight
Keep alcohol consumption to a moderate (preferably low) level
Monitor cholesterol
Get adequate sleep
*If your loved one already has kidney disease, in addition to those interventions listed above, they should also lower blood pressure, manage blood sugar levels, reduce sodium (salt) intake, avoid NSAIDs (ibuprofen, naproxen), consume protein (meats, eggs, tofu) in moderation, increase intake of fruits and vegetables, and get an annual flu shot.
Primary risk factors for kidney disease and damage
Diabetes - #1
High blood pressure
Heart disease
Obesity
Family history of kidney failure, heart disease, or diabetes
Other risk factors for kidney disease
Age 60 or older
Low birth weight
Prolonged use of NSAIDs, such as ibuprofen and naproxen
Lupus, other autoimmune disorders
Chronic urinary tract infections
Kidney stones
Symptoms and testing
Early kidney disease may not have symptoms, making early detection is critical. By the time your loved one has symptoms, kidney disease may be advanced, and symptoms can be misleading. If your loved one is exhibiting any of these, discuss them right away with their provider.
Unexplained fatigue or weakness
Increased need to urinate (especially at night)
Difficult, painful urination
Pink, dark urine (indicates blood in urine)
Foamy urine
Increased thirst
Puffy eyes
Unusual swelling in the face, hands, abdomen, ankles, or feet
If your loved one is high-risk or has any of these symptoms, their provider will order tests that look into kidney function, such as tracking blood pressure, checking for protein in urine, and measuring glomerular filtration rate (GFR). The provider may want to perform other tests as well, looking at things like blood urea nitrogen (BUN), creatinine, complete blood counts, and other factors before determining if advanced testing is required.
