The Truth About Alkaline Water: Benefits and Considerations

Alkaline water is characterized by a higher pH level compared to standard drinking water, making it less acidic. While it boasts essential minerals, many of the claims associated with its health benefits are still under debate.

Many enthusiasts assert that alkaline water can aid in pH balance, enhance longevity, and even lower the risk of serious conditions like cancer. It's crucial to note that while diet can influence pH levels, substantial changes in blood pH -- which should range from 7.35 to 7.45 -- remain tightly regulated by the body through organs like the kidneys and lungs.

This article examines the nature of alkaline water and evaluates the evidence behind its purported benefits.

The term "alkaline" pertains to the pH levels of the water, which are measured on a scale from 0 (most acidic) to 14 (most alkaline). Regular drinking water typically has a neutral pH of around 7, while alkaline water usually falls between 8 and 9. The pH of alkaline water is derived from minerals like calcium, potassium, magnesium, and iron.

Comparing Alkaline Water to Regular Water

Though alkaline water has a higher pH than regular water, claims that it can neutralize bodily acids lack substantial scientific backing. For balance, alkaline water typically has a pH of 8-9, while regular water tends to maintain a neutral pH at 7. Merely measuring pH is insufficient to classify water as alkaline; it must also include minerals and a negative oxidation-reduction potential (ORP), which indicates its antioxidant capacity.

The health implications of alkaline water remain contentious. While some studies hint at potential health benefits, more rigorous research is required to confirm these claims:

• A 2020 study involving mice indicated that alkaline water might improve markers associated with DNA aging.
• A 2018 study on mice suggested potential advantages in reducing symptoms of fatty liver disease.
• A small-scale 2018 human study reported slight improvements in stool quality after consuming alkaline electrolyzed water.
• A 2016 study demonstrated notable changes in blood viscosity among individuals consuming high-pH water post-exercise.
• A 2021 study indicated possible improvements in bone density for postmenopausal women with osteoporosis.

Despite these findings, further comprehensive human studies are necessary to validate these potential benefits. Moreover, research is still needed to address various claims that suggest alkaline water offers:

• Anti-aging properties through rapid antioxidant absorption.
• Colon cleansing effects.
• Enhanced immune function.
• Improved hydration and skin health.
• Weight loss contributions.
• Resistance against cancer.

Generally, alkaline water is considered safe for consumption. To date, no extensive evidence suggests serious side effects. However, the body's regulatory systems, including the production of hydrochloric acid, ensure that stomach pH levels remain stable, regardless of the water consumed.

Natural alkaline water is found in springs where water picks up minerals as it traverses through rocks. Conversely, many commercially available alkaline waters undergo a chemical process known as electrolysis to raise their pH levels. Adjustments in water composition are often achieved using an ionizer, which employs electricity to separate more acidic and alkaline molecules. However, the efficacy and safety of these methods are still being debated by experts.

For optimal results, some researchers recommend utilizing reverse osmosis systems to purify water before applying alkaline ionization. There are also warnings regarding the consumption of highly alkaline water (pH above 9.8), as it may increase the risk of hyperkalemia and interfere with nutrient absorption, potentially leading to adverse effects.

Alkaline water is widely available in supermarkets, health food stores, and online retailers. Additionally, you can produce your own alkaline water by adding pH-enhancing drops or baking soda to filtered water. If the water is adequately purified and mineralized, there are generally no limitations on daily consumption.