Alkaline water is the latest wellness trend touted by celebrities like Gwyneth Paltrow and Mark Wahlberg. But does it actually improve your health? Experts say the science is far from settled.
What is it? Bottled alkaline water often has added minerals like calcium and magnesium to raise its pH above 7. Proponents claim it neutralizes body acidity, prevents cancer, and slows bone loss.
The Reality: According to Harvard Health's Dr. Howard LeWine, any benefits are temporary. Once water hits your highly acidic stomach, the pH difference vanishes. Your kidneys will quickly correct any blood pH changes.
Some research suggests alkaline water may help with acid reflux (GERD), but Mayo Clinic stresses more studies are needed. Dr. LeWine notes that antacids are far more effective.
Safety Concerns: Drinking water with a pH over 9.8 can be dangerous. It may lead to hyperkalemia (high blood potassium), especially for those with kidney disease or taking stomach acid blockers (PPIs).
The Bottom Line: Nutritionist Robin DeCicco says there is 'no strong evidence' for long-term benefits. True acidity reduction comes from foundational habits: a diet rich in vegetables, fruit, lean protein, and healthy fats, while cutting sugar, caffeine, and processed foods.