The buzz around Kangen water increasing alertness and even helping prevent cancer by neutralizing your body’s acidity has led to people spending up to $4,000 on a Kangen water machine (yes, $4,000!). But are these claims substantiated? Or is a remedy as easy as drinking water too good to be true?

Here’s what you need to know if you’re considering it.

What is it?
Kangen water is water that’s been altered through a process called electrolysis, changing its pH level to be more alkaline. An Enagic machine needs to be installed and connected to your sink for this process to occur.

How does it work?
The machine filters impurities out of the water and purportedly adds antioxidant properties instead. The water is said to neutralize your body’s acidity and eliminate free radicals from the body, thus slowing down the aging process. “The health benefits of alkaline water have not been proven conclusively — though there have been some studies that seem to show that it might help reduce symptoms of acid reflux and increase blood flow, which means oxygen delivery is improved,” says Alix Turoff, registered dietician, nutrition consultant, and certified personal trainer.

Should you try it?
“Kangen water doesn’t carry many risks, though it’s possible it could lower your stomach’s acidity, making it harder to kill bacteria and causing gastrointestinal problems,” explains Turoff. On another note, Kangen water tastes noticeably better, so if you have trouble drinking the recommended amount of water, alkaline water might be worth trying.

xx, The FabFitFun Team