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2024 August

A Comprehensive Review of Kangen, Hydrogen, Reverse Osmosis, and Gravity Water Filters for Optimal Health

17th August 2024

Luisa Carugati, BA, DipCNM

Choosing the right water purification system is crucial for ensuring clean, healthy drinking water and supporting overall well-being.

Introduction:

In recent years, concerns about tap water safety and the quest for optimal hydration have led to increased interest in alternative water purification methods. This article examines the distinctions and advantages of Kangen Water, hydrogen-rich water (HRW), reverse osmosis (RO) water systems, and gravity water filters. We will address growing concerns about tap water safety, provide a balanced comparison of these different water purification technologies, and delve into the specifics of each method.

1. Concerns with UK Tap Water:

a) Contamination Incidents:

  • In South-East London, residents experienced symptoms such as stomach cramps, vomiting, and diarrhea. Thames Water conducted tests for contaminants, including Norovirus.
  • These incidents highlight vulnerabilities in public water systems, especially when compounded by aging infrastructure.

b) "Forever Chemicals":

  • Per- and polyfluoroalkyl substances (PFAS), often referred to as "forever chemicals," have been detected in water supplies.
  • These persistent pollutants are linked to various health issues, including cancer and hormonal disruptions.
  • Despite regulatory efforts, their presence underscores the need for advanced water purification methods.

c) Other Contaminants:

  • Chlorine and its by-products, used for disinfection, may pose potential health risks.
  • Heavy metals, pesticides, and pharmaceutical residues are additional concerns in tap water.

2. Understanding Hydrogen Water:

a) Definition:

  • Hydrogen water is regular water infused with molecular hydrogen (H₂) gas.

b) Potential Benefits:

  • Hydrogen water is known for its antioxidant properties, potentially neutralizing harmful free radicals.
  • It may help reduce oxidative stress and inflammation.
  • Claimed benefits include enhanced athletic performance, quicker recovery, improved mental clarity, and potential anti-aging effects.

c) Current Research:

  • Initial research is promising; however, more comprehensive studies are needed to fully validate these benefits.

3. Kangen Water: A Comprehensive Approach

a) History and Development:

  • Kangen Water was developed in Japan and is certified as a medical device for therapeutic benefits.
  • It has been used in Japanese hospitals and clinics for over 40 years.

b) Key Features:

  • Electrolyzed Alkaline Water: Helps balance the body's pH levels and supports overall health.
  • Antioxidant Properties: Reportedly 6 to 8 times stronger than green tea in reducing cellular damage and aging.
  • Enhanced Hydration: Features micro-clustering for improved absorption at the cellular level.
  • Detoxifying and Energy-Boosting: Aids in neutralizing harmful acids and impurities.

c) Why Kangen Water?

  • Provides a comprehensive approach to water purification and health benefits.
  • Has a long-standing reputation and extensive use in medical settings.

4. Reverse Osmosis (RO) Water:

a) Process:

  • Utilizes a semipermeable membrane to remove impurities, including chemicals, bacteria, and minerals.

b) Advantages:

  • Highly effective at removing a broad range of contaminants.
  • Produces very pure water.

c) Disadvantages:

  • Strips water of beneficial minerals.
  • Results in slightly acidic water.
  • Lacks the additional health benefits offered by hydrogen and alkaline water.

5. Gravity Water Filters (e.g., Berkey):

a) Definition:

  • Gravity water filters use a filtration system that relies on gravity to push water through a series of filters.

b) Key Features:

  • Multiple Filtration Stages: Often include a combination of ceramic, activated carbon, and other filters to remove contaminants.
  • No Electricity Required: Operate without electricity, making them suitable for off-grid use.
  • Ease of Use: Simple setup and maintenance.

c) Advantages:

  • Effective Contaminant Removal: Can remove a wide range of contaminants, including bacteria, viruses, heavy metals, and chemicals.
  • Cost-Effective: Generally lower initial costs compared to some other advanced systems.
  • Portability: Many models are portable and easy to use in various settings.

d) Disadvantages:

  • Slower Filtration Rate: May take longer to filter water compared to other systems.
  • Limited Capacity: Some models may have a limited capacity, requiring frequent refilling.
  • Not Alkaline or Hydrogen-Rich: Does not offer the benefits of alkaline or hydrogen-rich water.

6. Comparative Analysis:

a) Hydrogen Water:

Pros:

  • Potential reduction in oxidative stress and inflammation.
  • Possible benefits for mental and physical health.

Cons:

  • Benefits are primarily limited to antioxidant effects.
  • Does not provide alkalinity or enhanced hydration features.
  • Can be wasteful in terms of water usage.

b) Kangen Water:

Pros:

  • Offers comprehensive benefits, including antioxidants, improved hydration, and detoxification.
  • Produces alkaline water.
  • Has an established history of use in medical settings.

Cons:

  • Requires a significant investment in specialized equipment.
  • Regular maintenance is necessary.

c) Reverse Osmosis Water:

Pros:

  • Highly effective at contaminant removal.
  • Produces very pure water.
  • Removes harmful substances like lead, arsenic, and nitrates.

Cons:

  • Removes beneficial minerals along with contaminants.
  • Produces slightly acidic water.
  • Lacks the additional health benefits associated with hydrogen and alkaline water.
  • Can be wasteful, with some systems discarding several liters of water for every liter produced.

d) Gravity Water Filters:

Pros:

  • Effective at removing a broad range of contaminants.
  • Cost-effective and generally portable.
  • No electricity required, making them suitable for off-grid situations.

Cons:

  • Slower filtration rate.
  • Limited capacity and may require frequent refilling.
  • Does not provide the additional benefits of alkalinity or hydrogen enrichment.

7. Practical Considerations:

a) Combining Technologies:

  • For optimal water quality, consider using an additional filtration system before feeding water into a Kangen machine. While Kangen machines enhance water with beneficial properties, they are not as effective as RO systems at removing a wide range of contaminants. A combination of RO or another high-quality filtration system with a Kangen Water system can provide both high purity and additional health benefits.

b) Cost Considerations:

  • RO Systems: Generally cost between £150 and £600, depending on features and capacity. Initial costs are lower, but ongoing expenses include filter replacements and potential water wastage.
  • Kangen Water Systems: Typically cost between £2,000 and £4,000. These systems have a high initial cost but may offer lower long-term expenses due to fewer consumables.
  • Hydrogen Water Generators: Usually range from £100 to £1,000, depending on the model and features. They are often more affordable than Kangen systems but provide fewer benefits compared to comprehensive systems like Kangen.
  • Gravity Water Filters (e.g., Berkey): Typically cost between £150 and £300. Initial costs are relatively low, with minimal ongoing expenses beyond occasional filter replacements.

c) Maintenance Requirements:

  • All systems require regular maintenance to ensure optimal performance. RO systems need frequent filter changes and membrane replacements. Kangen Water systems require periodic cleaning and electrode replacement. Hydrogen water generators generally have lower maintenance needs. Gravity water filters need regular cleaning of the filters and occasional replacement depending on usage.

8. Environmental Impact:

  • RO Systems: Can be wasteful, potentially discarding 2-4 liters of water for every liter produced.
  • Kangen Water Systems: Generally more water-efficient but consume electricity.
  • Hydrogen Water Generators: Have a relatively low environmental impact.
  • Gravity Water Filters: Generally have a low environmental impact, with no electricity required and minimal water wastage.

Conclusion:

Each water purification system offers distinct advantages and limitations. Reverse osmosis excels at removing contaminants but results in demineralized and slightly acidic water. Hydrogen water provides antioxidant benefits but lacks the comprehensive features of other systems. Gravity filters, like Berkey, offer effective contaminant removal and cost-effectiveness but do not provide additional benefits like alkalinity or hydrogen enrichment.

Kangen Water stands out for its comprehensive benefits, including alkalinity, hydrogen enrichment, and enhanced hydration. Although it comes with a higher initial cost, many users find the long-term health benefits and overall water quality improvements to be worth the investment. Its ability to balance pH levels and provide antioxidant properties makes it a compelling option for those seeking a holistic approach to water purification, despite the expense.

The choice between these systems should be based on individual needs, health goals, and budget considerations. Those focused on removing contaminants might prefer an RO system or gravity filter, while those seeking additional health benefits might lean towards Kangen Water or hydrogen water generators. Ultimately, the best system for any individual will depend on their specific circumstances and preferences, making it important to evaluate each option carefully to find the right fit for their health and lifestyle needs.

 

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