Is Alkaline Water Good for Your Kidneys? Examining the Evidence

In recent years, alkaline water has gained popularity as a proposed health elixir, with proponents claiming it can provide benefits ranging from improved hydration and acid-base balance to the prevention of chronic diseases. Among these purported benefits is the idea that drinking alkaline water may support kidney health and help prevent kidney stones and other renal issues. But what does the scientific evidence actually say about the effects of alkaline water on the kidneys? In this article, we'll take an in-depth look at the current research to help you separate fact from fiction.

Understanding the Basics: pH, Alkalinity, and the Kidneys

Before diving into the potential renal effects of alkaline water, it's important to understand some key concepts. The pH scale measures how acidic or alkaline a substance is, ranging from 0 (highly acidic) to 14 (highly alkaline), with 7 considered neutral. Normal drinking water typically has a pH between 6.5 to 8.5.

Alkaline water refers to water that has a pH level above 7. It can occur naturally, such as in some springs and artesian wells, or be produced through ionisation or the addition of alkaline minerals. Some alkaline waters can have a pH as high as 9 or 10.

The kidneys play a vital role in regulating the body's acid-base balance, fluid and electrolyte levels, and waste removal. They filter the blood, reabsorb essential nutrients, and produce urine to excrete excess acids, toxins, and minerals. Disruption of the kidneys' delicate balance can lead to various health problems.

Potential Benefits of Alkaline Water for Kidney Health

Proponents of alkaline water argue that its higher pH can help neutralise acid in the body, reduce the acid load on the kidneys, and prevent the formation of kidney stones. Some studies have explored these potential benefits:

Reducing Kidney Stone Risk

One study found that drinking alkaline water with a pH of 8.8 was associated with a lower risk of developing uric acid kidney stones. The researchers proposed that the higher pH increased urinary pH and citrate levels, which could help prevent calcium oxalate stone formation.

Another study in 100 patients with recurrent calcium oxalate kidney stones found that drinking alkaline ionised water for 2 weeks resulted in increased urinary pH and citrate excretion compared to tap water, suggesting a potential protective effect against stone formation.

Supporting Kidney Function in Chronic Kidney Disease

Some research has investigated the use of alkali therapy, such as sodium bicarbonate supplements or alkaline water, in managing metabolic acidosis associated with chronic kidney disease (CKD).

A systematic review concluded that alkali therapy was associated with slowing the progression of CKD and improving kidney function compared to placebo. However, most of the studies used oral bicarbonate supplements rather than alkaline water specifically.

One small study in 67 patients with stage 3 CKD found that drinking 1 liter of alkaline electrolysed water daily for 2 months resulted in improved acid-base balance and reduced markers of kidney injury compared to tap water. However, larger and longer-term studies are needed to confirm these findings.

Naturopress Alkaline Water Ionisers and Filters

In addition to our high-quality cold press juicers, Naturopress also offers a range of alkaline water ionisers and filters designed to transform your tap water into healthy, antioxidant-rich alkaline water. Their alkaline water machines use advanced filtration and ionisation technology to produce water with a pH range of 2.5 to 11.2, providing various levels of acidity and alkalinity for different uses.

Key features of Naturopress alkaline water ionisers include:

• Eight platinum-coated titanium plates for efficient water ionisation
• Dual filtration system to remove contaminants like fluoride, chlorine, and nitrates
• Long-lasting filters with a 9,000-liter lifespan
• Six different water settings for various purposes, such as drinking, cooking, cleaning, and beauty
• Self-cleaning function for easy maintenance
• LCD screen displaying water pH, ORP (Oxygen Reduction Potential), and filter usage
• Produces hydrogen-rich alkaline water with antioxidant properties
• Affordable pricing compared to competitors, with free shipping and extended warranty options

Naturopress offers two models of alkaline water ionisers: the silver Alkaline Water Ioniser and the black Multifunctional Alkaline Water Machine. While both models provide excellent filtration and ionisation, the silver model features a dual filtration system and a water heating function.

By incorporating alkaline water into your daily routine, you can enjoy potential health benefits such as improved hydration, detoxification, and antioxidant intake. Naturopress makes it easy and affordable to access high-quality alkaline water right from your kitchen tap, without the need for expensive bottled water or complex installation processes.

Frequently Asked Questions

Can alkaline water prevent kidney stones?

Some studies suggest that drinking alkaline water with a pH around 8.8 may help reduce the risk of developing certain types of kidney stones, particularly uric acid and calcium oxalate stones. The proposed mechanism is that alkaline water can increase urinary pH and citrate levels, which could inhibit stone formation. However, more research is needed to confirm these effects and determine the optimal pH and intake levels for kidney stone prevention.

Is alkaline water safe for people with kidney disease?

People with kidney disease, especially those in advanced stages or on dialysis, should be cautious about consuming alkaline water without medical supervision. Impaired kidney function can disrupt the body's ability to maintain proper acid-base balance and excrete excess minerals. Drinking large amounts of alkaline water could potentially lead to alkalosis or mineral imbalances in these individuals. It's important for kidney disease patients to consult their healthcare team before making significant dietary changes.

Can drinking alkaline water improve kidney function?

Some preliminary studies have suggested that alkali therapy, such as taking sodium bicarbonate supplements or drinking alkaline water, may help slow the progression of chronic kidney disease and improve markers of kidney function. However, most of this research has been conducted in small human trials or animal models, and the specific effects of alkaline water remain unclear. Larger, well-controlled studies are needed to determine if alkaline water can truly enhance kidney function in people with or without renal issues.

How much alkaline water should I drink for kidney health?

Currently, there is no established guideline for how much alkaline water to drink for optimal kidney health. The studies that have shown potential benefits used varying amounts, typically ranging from 1 to 2 liters per day. However, it's important to remember that these studies had limitations, and individual fluid needs can vary based on factors like age, sex, weight, activity level, and overall health status. Consulting with a healthcare professional can help you determine an appropriate fluid intake plan for your specific needs.

Can alkaline water replace other kidney stone prevention strategies?

While drinking alkaline water may offer some potential benefits for kidney stone prevention, it should not be viewed as a replacement for other evidence-based strategies. Maintaining adequate fluid intake, following a balanced diet low in sodium and animal protein, and getting regular physical activity are all important steps for reducing kidney stone risk. If you have a history of kidney stones, work with your healthcare provider to develop a comprehensive prevention plan tailored to your needs.