Why Most People Don't Need an Electrolyte Drink Every Day

Electrolyte drinks are everywhere now: sachets by the tills, powders in gym bags, a growing shelf in supermarkets that didn't exist a few years ago. The pitch is usually the same, that water alone isn't quite enough and an electrolyte drink closes the gap. For most people, on most days, that isn't what the evidence actually says.

Four Different Things, One Word

"Hydration" gets used as if it means one thing. It doesn't. There's normal day-to-day hydration: drinking water and eating a varied diet, which is what most healthy adults are already doing most of the time. There's sports hydration: fluid and electrolyte replacement built for sustained, intense exercise. There's illness-related rehydration: replacing what's lost to vomiting or diarrhoea, which is what oral rehydration salts are actually formulated for. And there's electrolyte supplementation sold as its own everyday product category, priced and positioned as if it belongs in all three situations rather than mainly the last two.

Treating those four as interchangeable is where the marketing runs ahead of the evidence.

What Normal Hydration Actually Requires

The Institute of Medicine's reference work on water and electrolytes states it plainly: sodium deficiency from diet alone doesn't normally happen, even for people on very low-sodium diets, and even fairly heavy sweating doesn't usually create a need for salt supplements on top of an ordinary diet. UCLH, part of University College London Hospitals, puts the same finding in plainer terms: if someone is reasonably well, active, and eating normally, water is enough, and a varied diet replaces what's lost.

That's the position for most healthy adults on most days: not that electrolytes never matter, but that they aren't, by default, something a normal diet is missing.

When It Actually Matters

The exceptions are specific, not vague. UCLH describes electrolytes becoming more relevant for longer, harder, or hotter exercise, often put at somewhere beyond an hour. Illness involving vomiting or diarrhoea is a second, well-established case, which is exactly what oral rehydration salts are designed to treat. Certain medications and medical conditions, kidney disease and blood pressure treatment among them, change the picture too, and that's a conversation for a person's own doctor, not a drink.

A short walk to the office on a warm day isn't the same as any of those.

Sweat Isn't the Same for Everyone

Even within exercise, the amount of sodium a person loses through sweat varies considerably. A 2017 review in the journal Sports Medicine found sweat sodium concentration differs substantially between individuals, and within the same person across conditions, depending on exercise intensity, heat, and how acclimatised someone is. There isn't one number that applies to everyone. That cuts both ways: it's also why "you definitely don't need this" would be too flat a claim to make for every person and every situation. The honest answer sits closer to "it depends" than either extreme.

On Too Much

The other side of this rarely gets said in a category built on selling more of something. Sustained, high sodium intake is linked to raised blood pressure in people who are sensitive to it, which is part of why the World Health Organization recommends adults keep sodium intake under 2,000mg a day, well below what some electrolyte-forward diets and drinks add up to. This isn't settled to the last gram: some research points to a curve where both very low and very high sodium intake carry more risk than a middle range, and exactly where that middle range sits is still debated. What isn't in dispute is the basic shape of it: more isn't automatically better, in either direction.

None of this makes electrolyte drinks dangerous. It makes them a specific tool for specific situations, not an everyday default.

Why 0800Labs Is Writing About This

We've written before about testing our own gummies and saying plainly when the result wasn't good enough. This is the same instinct, pointed at a category rather than a single product: we'd rather say most people don't need something every day than invent a reason they do.

It's also why our own formula doesn't include electrolytes. We asked the same question of our own product that this piece asks of the category: does a drink built for an ordinary day at a desk actually need them. Sustained exercise, heat, illness, medication, none of that describes the workday we're building for, so we left them out.

That's not a claim that a drink with electrolytes in it is worse. It's the same reasoning as above, applied to our own formula instead of someone else's.

We're building something for the workday. Workday Hydration is our own term for that moment, not a claim about what any drink, including ours, actually does.

There's no product to buy yet. The Labs is how we'll tell you when there is.