(NaturalHealth365)  Two of the most common medications on earth sit in medicine cabinets worldwide, and mounting human research ties both to declining kidney function. One group eases pain. The other calms heartburn, and both are sold over the counter in most countries.

These drugs may gradually reduce how well the kidneys filter waste, according to multiple studies. The change rarely causes noticeable symptoms at first. Over months and years, though, the effect can build significantly.

What a 10-year study revealed about painkillers and kidney function decline

Non-steroidal anti-inflammatory drugs, better known as NSAIDs, include ibuprofen (Advil, Motrin), naproxen (Aleve), and celecoxib (Celebrex). They are among the most widely used medications on earth.

A 2025 study published in Drugs & Aging followed 1,812 older adults from a national health database in South Korea over 10 years. Researchers matched 604 NSAID users with 1,208 non-users and tracked their kidney function throughout the study period.

The results were notable. NSAID users had a 46 percent relatively higher risk of developing early-stage chronic kidney disease compared with the control group. Both COX-1 and COX-2 type NSAIDs showed similar associations, with relative risk increases of 53 percent and 61 percent respectively.

The pattern of kidney function decline was especially telling. Both groups showed stable readings during the first year. From the second year onward, however, NSAID users experienced a noticeably faster drop in kidney filtering capacity that persisted throughout the entire follow-up period.

These are associations from observational data, not proof of direct causation. But a 10-year follow-up with careful statistical matching makes the findings difficult to dismiss.

Acid blockers and kidney health: What a pooled analysis of nearly 600,000 people found

Proton pump inhibitors, or PPIs, are the other category raising serious concerns. Brand names include omeprazole (Prilosec), lansoprazole (Prevacid), and esomeprazole (Nexium). They are prescribed for heartburn, acid reflux, and stomach ulcers, and are available over the counter in many countries.

A 2026 systematic review and meta-analysis published in Cureus pooled data from 15 observational studies representing populations across Asia, Europe, and North America. Combining six of those studies, covering nearly 595,000 participants, researchers found PPI users carried a 68 percent relatively higher risk of developing chronic kidney disease compared with non-users.

The data on end-stage kidney disease was more modest but still concerning. Across four studies covering nearly 150,000 participants, PPI users carried a 15 percent relatively higher risk of reaching the point where dialysis or a kidney transplant becomes necessary.

As with the NSAID findings, these results come from observational research and cannot prove that PPIs directly cause kidney disease. The consistency of the association across multiple large studies from different countries, however, is a pattern worth taking seriously.

Natural ways to support healthy kidney function

Whether or not you currently take NSAIDs or PPIs, supporting your kidneys through diet and targeted nutrients is one of the smartest things you can do for your long-term health. Here is what the research and holistic healthcare providers recommend.

Kidney-supporting foods

Water-rich fruits and vegetables help the kidneys flush waste more efficiently. Watermelon, cucumber, celery, and lettuce are excellent choices. Whenever possible, choose organic produce. It carries far fewer pesticide residues and tends to taste noticeably better too.

Leafy greens like kale, spinach, collard greens, and Swiss chard deliver potassium and antioxidants that ease the filtering workload on the kidneys.

Berries, especially blueberries, cranberries, and strawberries, provide powerful antioxidants that help protect kidney cells from oxidative damage.

Allium vegetables like garlic, onions, and leeks offer natural anti-inflammatory compounds that support healthy kidney tissue. Since chronic inflammation plays a major role in kidney decline, these foods deserve a regular place on your plate.

Extra virgin olive oil delivers healthy fats and polyphenols that help calm inflammation throughout the body, including the kidneys.

Whole grains such as brown rice, barley, and quinoa provide fiber that supports healthy blood sugar and blood pressure, two of the biggest drivers of kidney strain over time.

Targeted supplements and herbs

Turmeric (curcumin) is one of the most studied natural anti-inflammatory compounds available.

• Recommended forms: Curcumin combined with piperine (black pepper extract) or phospholipid-based formulations for better absorption
• Typical daily amount: 500 to 1,500 mg of curcumin
• Forms to avoid: Plain turmeric powder in capsules without an absorption enhancer, which delivers very little usable curcumin

Dandelion root has a long history in traditional medicine as a kidney-supporting herb. It supports bile production and healthy fluid balance, which helps the kidneys clear waste products more efficiently.

Coenzyme Q10 (CoQ10) is a powerful antioxidant that supports cellular energy production in kidney tissue.

• Recommended form: Ubiquinol (the reduced, bioavailable form) rather than ubiquinone
• Common daily dose: 100 to 200 mg
• Food sources: Grass-fed beef, cage-free poultry, and sardines

Vitamin D plays a direct role in kidney health and is commonly low in people with chronic kidney disease.

• Recommended form: Vitamin D3 (cholecalciferol)
• What many holistic providers suggest: 2,000 to 5,000 IU daily, ideally guided by blood testing
• Best natural source: Direct sunlight exposure (15 to 20 minutes daily when possible)

Probiotics support a healthy gut microbiome, which plays a role in reducing the toxic burden that the kidneys must process. Look for multi-strain formulations with at least 10 billion CFU.

Lifestyle strategies that protect kidney function

Stay well hydrated throughout the day. Proper water intake is one of the simplest and most effective ways to support the kidneys. Aim for at least half your body weight in ounces of clean, filtered water daily.

Manage stress through natural techniques like meditation, deep breathing, yoga, or spending time in nature. Chronic stress raises blood pressure and cortisol, both of which burden the kidneys over time.

Exercise regularly. Even moderate daily movement, such as walking 30 minutes a day, supports healthy blood pressure, blood sugar, and circulation, all of which directly protect kidney function.

As always, work with a trusted holistic healthcare provider before adding supplements to your routine, especially if you are currently taking medications.

What one study can and cannot promise

No single observational study can prove that a specific medication directly causes kidney disease. These are associations, and other factors may play a role. What these studies can do is raise important questions and point toward patterns that deserve attention, especially when multiple large-scale investigations from different countries reach similar conclusions.

The bigger picture matters. Jonathan Landsman’s Fatty Liver Docu-Class, which includes an entire program dedicated to kidney health and metabolic syndrome, was designed to give you the practical, evidence-based strategies that most conventionally trained doctors never discuss.

The program covers dietary changes, targeted supplementation, detoxification support, and the lifestyle shifts that research most strongly supports for protecting kidney function.

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Sources for this article include:

NIH.gov
NIH.gov