Blood pressure levels above 120/80 mmHg start to pose a risk to kidneys, with levels at or above 130/80 mmHg (Stage 1 Hypertension) significantly increasing damage risk, and 140/90 mmHg (Stage 2) causing more severe damage, as high pressure constricts and weakens kidney blood vessels, impairing filtration and creating a vicious cycle. Even slightly elevated systolic pressure (e.g., 120-129 mmHg) is linked to increased risk of Chronic Kidney Disease (CKD).
In general, hypertension is a blood pressure reading of 130/80 or higher. Dr. Ivan Porter II, a Mayo Clinic nephrologist, says high blood pressure can lead to heart disease, stroke and other serious health problems, including chronic kidney disease.
Intensive blood pressure lowering reduced the risk of kidney failure (HR 0.73, 95% CI 0.62–0.86), but not in patients without proteinuria at baseline (HR 1.12, 95% CI 0.67–1.87).
Early Signs of Kidney Disease
Noticed puffiness around your eyes and/or swollen ankles and feet? When your kidneys are not removing excess water and waste from your body, it can build up in your tissues. This leads to swelling, usually in your lower body, although it can affect other areas, including around your eyes and sometimes your hands.
Swollen or puffy face
Failing kidneys don't remove extra fluid, which builds up in your body causing swelling in the face.
Having high cholesterol can put you at risk of developing kidney disease and having kidney problems, as well as the more obvious associated cardiovascular problems. If you are worried about high cholesterol or the potential associated risks, it's a good idea to speak to your GP and arrange a test.
Generally, earlier stages are known as 1 to 3. And as kidney disease progresses, you may notice the following symptoms. Nausea and vomiting, muscle cramps, loss of appetite, swelling via feet and ankles, dry, itchy skin, shortness of breath, trouble sleeping, urinating either too much or too little.
The best drink for kidney repair and overall health is plain water, as it helps flush toxins, but mineral water, unsweetened green tea, black coffee (in moderation), low-potassium juices (like unsweetened cranberry), and herbal teas (like ginger or mint) are also great for variety and added benefits, while sugary sodas, alcohol, and coconut water should generally be avoided. Always consult a doctor for personalized advice, especially with kidney disease.
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.
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.
They are widely used as first-line medications for hypertension (high blood pressure). But long-term use, for some patients, can take a terrible toll on the kidney, causing scarring and other dramatic physical changes that shift the organ's focus from blood filtration to producing renin.
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.
Symptoms of kidney disease
In other words, once blood pressure rises above normal, subtle but harmful brain changes can occur rather quickly—perhaps within a year or two. And those changes may be hard to reverse, even if blood pressure is nudged back into the normal range with treatment.
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.
Interestingly, treatment with APCV apparently enhanced the ability of the kidney to prevent creatinine accumulation in the blood by lowering the upsurge by 20.51%. This probably indicates that APCV protected rat kidneys against the damaging effects of CCl4.
Take action to prevent, delay, or manage CKD:
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.
Acute kidney failure can be caused by factors like severe dehydration, infections, or blockages. The good news is that with the right treatment, it's often possible to reverse kidney disease in these cases. Your kidneys can return to normal function after the underlying issue is resolved.
But too much cholesterol can lead to serious problems, including heart disease and stroke. High blood cholesterol is one of the major controllable risk factors for heart disease, heart attack and stroke. High cholesterol causes 4.4 million deaths every year, or 7.8% of all deaths.
The main test for kidney disease is a blood test. The test measures the levels of a waste product called creatinine in your blood. A doctor uses your blood test results, plus your age, size, and gender to calculate how many millilitres of waste your kidneys should be able to filter in a minute.
People with kidney disease may notice that their nails are yellow or discolored. If the kidneys are not functioning properly, they can't effectively filter out waste products, including nitrogen waste, which can lead to changes in the color and texture of the nails, making them appear pale or yellowish.
1. Less Energy or Trouble Concentrating. A severe decrease in kidney function can lead to a buildup of toxins and impurities in the blood. This can cause people to feel tired or weak and can make it hard to concentrate.