You’ve seen the ads: "Alkaline water balances your body’s pH!" I call bunk. Unless you have a specific medical condition like kidney disease, your body balances itself just fine. Drinking high-pH water won’t "de-acidify" you because your blood doesn’t work that way.
Póster Alkalinity PH chart with water acidity from bad to ideal outline
That said, there is a tiny kernel of truth for some people. A 2012 study suggested that alkaline water with a pH of 8.8 might help deactivate pepsin, an enzyme linked to acid reflux. So if heartburn is your nemesis, it might offer temporary relief. But it’s not a cure, and it’s certainly not a health necessity for the rest of us.
What Actually Matters More Than the Number
Here’s the thing I wish someone told my friend at the fancy water aisle: Mineral content matters way more than pH. Water that naturally has a higher pH (like from a limestone spring) usually contains calcium, magnesium, and potassium. Those minerals are legitimately good for you.
But a bottle of artificially alkalized water? It’s just water zapped with electricity or passed over rocks to raise the pH. It has zero extra minerals. You’re paying for a number that your body ignores. Ouch.
