The Olsen twins served $225-per-pack water at their fashion show is it really the purest in the world?

Guests at The Row’s Paris Fashion Week event were served more than just sleek silhouettes.Instead of their usual post-show snacks, attendees said founders Mary-Kate and Ashley Olsen quenched their thirst with bottles of water — but this wasn’t your everyday H₂O.Priced at a staggering $225 per pack, the “deuterium-depleted” Litewater is marketed as a miracle beverage that can do everything from sharpen the mind to fight disease.Its makers even call it “the easiest, most powerful anti-aging strategy that exists.”But do these bold claims actually hold water? The Post spoke to Dr.Nate Wood, a primary care physician, trained chef and the director of culinary medicine at Yale School of Medicine, to find out.

Deuterium is a stable isotope of hydrogen — basically, a heavier version of the hydrogen atom, thanks to an extra neutron in its nucleus.It naturally exists in water, but high-end brands like Litewater use a special filtration process to strip much of it out, creating what’s known as deuterium-depleted water, or DDW.When you drink DDW, it slowly swaps out regular water in your body for water with less deuterium.Over time, the “heavier” water is flushed out, lowering deuterium levels in your tissues and cells.Supporters say this shift unlocks a range of health benefits — but not everyone in the scientific community is sold on the idea.

According to Litewater, when deuterium levels in the body get too high, your cells’ ability to filter out these so-called “heavy hydrogens” becomes compromised.Over time, this buildup can allegedly disrupt cellular metabolism and mitochondrial function — leading to fatigue, accelerated aging and a higher risk of chronic disease and cancer.By reducing deuterium through DDW, Litewater claims you can boost energy, improve cognition, optimize mitochondrial function and support healthier aging from the inside out.“With every drop I drink of deuterium-depleted water I get lighter and more vibrant,” welln...