Experts Caution Against Overhyped Electrolyte Supplements

Many claims about health benefits of electrolyte drinks need to be taken with a grain of salt, say experts.

Published on Feb. 28, 2026

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Electrolyte supplements have become ubiquitous, with social media influencers promoting their benefits. However, experts say that for most healthy people, these supplements are unnecessary and may even be harmful if not used properly. The article explores when electrolyte replacement is truly needed, the history of sports drinks like Gatorade, and the wide variation in electrolyte concentrations across different supplement brands.

Why it matters

As the popularity of electrolyte supplements continues to rise, it's important for consumers to understand when they are truly beneficial and when they may be unnecessary or even dangerous. This story provides important context and expert advice to help people make informed decisions about their hydration and electrolyte needs.

The details

Electrolytes are substances that help regulate chemical reactions in the body and balance fluid levels. We lose electrolytes like sodium, chloride, and potassium through sweat. Electrolyte drinks and powders are meant to replace what's lost, but experts say the kidneys of a healthy person can generally maintain electrolyte balance on their own. Taking electrolyte supplements without a real need may just result in the excess being flushed out in urine. The article also notes that electrolyte supplement concentrations vary widely, and improper use of potassium supplements can be dangerous.

  • In 1965, University of Florida assistant football coach Dwayne Douglas asked the school's first kidney researcher, Robert Cade, why football players couldn't urinate after games.
  • Cade's research led to the creation of the sports drink Gatorade, which was initially designed to help the Gators football team replace fluids and electrolytes lost through heavy sweating.

The players

Dwayne Douglas

A former assistant football coach at the University of Florida whose question about why players couldn't urinate after games led to the creation of Gatorade.

Robert Cade

The University of Florida's first kidney researcher, who led the team that developed the original Gatorade formula to help replace fluids and electrolytes lost by football players.

Julia Zumpano

A registered dietitian at the Cleveland Clinic who provides expert advice on electrolyte supplements.

Hunter Huston

A nephrologist at Vanderbilt University who also consults for a UK-based company that provides electrolyte replacement plans for endurance athletes.

Darren Rovell

The author of "First in Thirst: How Gatorade Turned the Science of Sweat Into a Cultural Phenomenon" and an investor in the sports drink Bodyarmor.

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What they’re saying

“That question changed our lives.”

— Robert Cade, University of Florida's first kidney researcher (AP)

“Most folks that are exercising, that are, say, doing a marathon, are gonna be way past that two hours, and it does then make sense to be thinking about, 'What's going to be my fluid and electrolyte replacement plan?'”

— Hunter Huston, Vanderbilt University nephrologist (AP)

“It all starts in the aspiration of being better, but you know we do have to check ourselves.”

— Darren Rovell, Author and sports drink investor (AP)

What’s next

Experts recommend that people consult with a healthcare professional or registered dietitian to determine their individual electrolyte needs, especially for those engaging in prolonged or intense exercise.

The takeaway

While electrolyte supplements can be beneficial for certain individuals, such as endurance athletes, the average healthy person likely does not need to rely on them daily. Moderation and understanding one's specific hydration and electrolyte needs are key to avoiding unnecessary or potentially harmful over-supplementation.