Core water is ionized water infused with extra hydrogen molecules through electrolysis. The process increases the water's negative ORP (oxidation-reduction potential), making it an antioxidant.
During ionization, an electric current splits water molecules into hydrogen-rich water (cathode side) and oxygen-rich water (anode side). The hydrogen-rich side becomes core water. This process differs from creating alkaline water, which simply increases pH by reducing water's hydrogen ion concentration.
The added hydrogen acts as a selective antioxidant. It neutralizes harmful free radicals like hydroxyl radicals while leaving useful ones like nitric oxide untouched. Most commercial core water products contain 0.5-1.6 ppm dissolved molecular hydrogen (H₂).
| Type | H₂ Concentration | Production Method |
|---|---|---|
| Electrolyzed Reduced Water | 0.5-1.6 ppm | Electrolysis with platinum-coated titanium electrodes |
| Hydrogen Water Tablets | 0.3-0.8 ppm | Magnesium powder reacting with water |
| Hydrogen Gas Injection | 1.0-1.6 ppm | Direct hydrogen gas infusion |
Researchers first developed core water in the 1960s to study hydrogen's biological effects. Today, athletes and health-conscious consumers drink it to reduce oxidative stress. Studies suggest it may improve recovery times, skin health, and metabolic function.
A 2015 study published in Molecular Medicine found that core water reduced inflammation markers in patients with rheumatoid arthritis. However, most research uses concentrations higher than commercially available products.
People often confuse core water with alkaline water. While both undergo electrolysis, their key differences lie in their chemical properties:
Another misconception is that core water hydrates better than regular water. Research shows hydration depends primarily on water intake volume, not hydrogen content. However, core water may offer additional antioxidant benefits.
I tested core water during a 3-week trial. While I noticed no dramatic changes, my post-workout muscle soreness seemed less severe. However, without proper controls, I couldn't attribute this solely to the water.
You can create a basic version using hydrogen water tablets. Add one tablet to a liter of purified water and wait 5 minutes for complete dissolution. For electrolyzed reduced water, specialized machines are required.
Always store core water in sealed containers to prevent hydrogen gas from escaping. Exposure to light and air reduces hydrogen concentration within hours.
For more on water and health, see our guide on what lemon water does.