Kidney damage is often caused by chronic conditions like diabetes and high blood pressure, which damage blood vessels, but can also result from infections, urinary tract blockages (stones, enlarged prostate), dehydration, autoimmune diseases, and long-term use of certain medications (like NSAIDs), with lifestyle factors like smoking, poor diet, and heavy alcohol use increasing risk.
Having long-standing high blood pressure, diabetes or an autoimmune disease such as lupus can cause damage to the kidneys. Regular checkups to monitor how well the kidneys are working may include blood tests and tests to check for protein in the urine.
Symptoms can include:
To strengthen your kidneys, focus on a healthy lifestyle: stay hydrated with water, eat a balanced diet low in salt and processed foods, exercise regularly, avoid smoking and excessive alcohol, manage blood pressure and sugar, limit over-the-counter pain relievers (like NSAIDs), and maintain a healthy weight to support overall kidney function.
It's usually caused when bacteria or a virus gets into the kidneys. The bacteria or virus can enter the kidney(s) from the bladder or from blood traveling from other parts of the body. Common causes for UTIs in children include: Not keeping the genital area clean and dry.
It can be cause by infection, an autoimmune disease (such as lupus), or an unknown reason. high blood pressure (hypertension). This can be a sign of kidney problems, but having high blood pressure from another cause can also cause kidney problems.
Symptoms of a kidney infection can include:
Diabetes and high blood pressure are the top culprits damaging kidneys most, as they harm the delicate filtering blood vessels, leading to chronic kidney disease (CKD) and failure; other major factors include smoking, obesity, dehydration, poor diet (high sugar/salt/red meat), certain medications (NSAIDs), lack of sleep, and genetic conditions. These factors create a cycle where damaged kidneys worsen blood pressure, further damaging them.
Approximately 1 in 3 adults with diabetes, and 1 in 5 adults with high blood pressure, may have chronic kidney disease. While it's not possible to reverse kidney damage, you can take steps to slow it down.
Kidney pain feels like a deep, dull ache in your back or side, under the ribs, but can also be sharp and severe, especially with kidney stones, often spreading to the groin and accompanied by nausea, fever, or urinary changes. Unlike typical back pain, it's often constant, deep within the body, and doesn't improve with rest or shifting positions, signaling an urgent issue like infection or stones.
Symptoms of kidney disease
Itching often happens on both sides of the body at the same time (for example, both arms or both legs). Itching is most common and severe in people with kidney failure,but those in the earlier stages of CKD may also notice milder itching.
High levels of metabolic waste products in the blood can damage nerve cells in the brain, trunk, arms, and legs. Uric acid levels may increase, sometimes causing gout. Diseased kidneys cannot excrete excess salt and water. Salt and water retention can contribute to high blood pressure and heart failure.
Early Signs of Kidney Disease
Canned foods, some frozen foods, and most processed meats contain large amounts of salt. Snack foods such as chips and crackers are also high in salt. Table salt, some seasonings, ketchup, mustard, and certain sauces such as barbecue, soy, and teriyaki sauces are high in sodium.
Stage 1 CKD means you have a normal estimated glomerular filtration rate (eGFR) of 90 or greater, but there is protein in your urine (i.e., your pee). The presence of protein alone means you are in Stage 1 CKD. Stage 1 CKD means you have a normal estimated glomerular filtration rate (eGFR) of 90 or greater.
To support kidney health, focus on plant-based foods like berries, cabbage, cauliflower, onions, garlic, and leafy greens, plus fatty fish (salmon, tuna), egg whites, and whole grains like buckwheat, while limiting salt, processed foods, and high-potassium options like orange juice, opting for water as your primary drink. A kidney-friendly diet emphasizes fresh, whole foods to help reduce inflammation and manage kidney function.
Chronic Kidney Failure: Unlike its acute counterpart, chronic kidney failure develops slowly over time, and is often linked to prolonged issues such as diabetes or high blood pressure. Unfortunately, chronic kidney disease cannot be reversed.
Stress and uncontrolled reactions to stress can also lead to kidney damage. As the blood filtering units of your body, your kidneys are prone to problems with blood circulation and blood vessels. High blood pressure and high blood sugar can place an additional strain or burden on your kidneys.
8 Surprising Ways You May Be Hurting Your Kidneys
Soda is one of the worst drinks for kidney health. Regular soda is packed with sugar and caffeine. Dark sodas also contain phosphorus additives. These can be harmful to people with kidney problems because they can cause bone and heart issues.
To prevent kidney stones, limit high-oxalate foods like spinach, rhubarb, beets, nuts, chocolate, and sweet potatoes, along with high-sodium items, sugary drinks, and excessive animal protein, while ensuring adequate dietary calcium and hydration. Common culprits include: spinach, rhubarb, beets, nuts (almonds, cashews), chocolate, tea, soy products, sweet potatoes, okra, and excessive salt/added sugars, though a dietitian can personalize your diet.
You can check kidney function at home using at-home test kits for urine (detecting protein/albumin) or finger-prick blood tests (checking creatinine/eGFR), often with smartphone apps for analysis, or by monitoring symptoms like increased nighttime urination (nocturia), swelling, or changes in urine (blood, foam) and discussing results with a doctor, as home tests screen but don't replace professional diagnosis.
About Stage 1 CKD
People with stage 1 CKD have an estimated glomerular filtration rate (eGFR) of 90 or higher and ongoing kidney damage for 3 months or more. “Kidney damage” can mean many things. This often presents as albuminuria – having a urine albumin-creatinine ratio (uACR) of 30 or more for at least three months.
Symptoms of a kidney infection might include: