Hydrogen water has gained significant attention in recent years as a wellness trend, but what exactly is it, and does science support its purported benefits? Unlike regular water—which consists of two hydrogen atoms bonded to one oxygen atom (H₂O)—hydrogen water is simply water that has been infused with additional molecular hydrogen gas (H₂). This extra hydrogen does not change the chemical structure of the water; instead, it dissolves into the water, similar to how carbon dioxide is dissolved in carbonated beverages. The resulting product is a clear, odorless, and tasteless liquid that is said to offer a range of health advantages, from reducing inflammation to improving athletic performance. In this complete guide, we will explore the science behind hydrogen water, its potential uses, and how it fits into the broader landscape of functional beverages.