What is Alkaline Water?

Water is a combination of hydrogen and oxygen. That’s why you call it H2O.

The pH is the concentration of hydrogen ions contained in the water.

Water’s pH level determines how acidic it is and ranges from 0 to 14. A pH of 7 is considered neutral.

That “7” number is considered neutral or balanced between acidic and alkaline. If water is below 7 on the pH scale, it’s “acidic.” If it’s higher than 7, it’s “alkaline.”

What Makes Alkaline Water Different?

EPA guidelines state that the pH of tap water should be between 6.5 and 8.5. Still, tap water in the U.S. tends to fall below that — in the 4.3 to 5.3 range — depending on where you live.

Bottled water falls under different standards depending on whether it claims to be alkaline. Bottled alkaline water has a pH level above 7. In some cases, manufacturers use a special device to change the chemical makeup of the water. Other times, they add nutrients to the water to change its pH.

For comparison, orange juice has a pH of 3.3 and black coffee is about a 5. Pure water has a neutral pH of 7. But tap water in the U.S. tends to fall below that — in the 4.3 to 5.3 range — depending on where you live.

Checking the Health Claims

Alkaline water enthusiasts claim that its increased hydrogen provides greater hydration than regular water, especially after a hard workout.

Fans of the stuff also say that regular drinking water with a pH below 7 creates too much acid in your blood and cells. They blame plain water’s low pH for all sorts of health problems, from osteoporosis to cancer.

Water that is more alkaline supposedly reduces acid in the bloodstream and:

Improves metabolism
Increases energy
Slows aging
Improves digestion
Reduces bone loss

Backers of high-pH water say it also has the power to starve cancer cells.

Can Alkaline Water Do All This?

The health claims about alkaline water are more about sales than science. There isn’t much research to support them.

Also, your body, on its own, can keep your pH levels at an even keel. Your kidneys are your built-in filtration system. It’s their job to balance the acid levels in your body. If your blood gets too acidic, your body brings it down by breathing out more carbon dioxide.

Your stomach is the great equalizer. Your gastric juices — a combination of digestive enzymes and hydrochloric acid — neutralize everything you eat and drink. Basically, your stomach will re-acidify alkaline water before it can do anything the health claims promise.

How Does It Taste?

Alkaline water may taste bitter or different from your tap water. This can also change the taste of anything you use it in, like coffee or tea.

Is It Safe?

Unless you have a kidney disease, alkaline water doesn’t pose any serious health risks. The high pH could make your skin dry and itchy or cause an upset stomach, but that’s about all.

Just because it’s safe, though, doesn’t mean it does anything for you. For all the benefits of a tall glass of water, fill up at the tap.

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