Lifestyle & Wellness4 January 20263 min read

Sports Drinks vs Water: What Active People Should Know

Most athletes drink sports drinks. Most don't need them. Here's how the habit impacts teeth — and when sports drinks are genuinely useful.

Dr. Michael Stevens

Periodontist

The tooth story

Sports drinks are:

Acidic (pH 2.5–3.5) — very erosive
Sugary (5–10 g per 100ml) — cavity-promoting
Consumed slowly during sessions — extended exposure

A gym-goer who sips a sports drink over a 90-minute session delivers acid and sugar to teeth for 90 continuous minutes.

When they're genuinely needed

Electrolyte drinks help when:

Exercise exceeds 60–90 minutes of moderate intensity
High sweat loss in hot conditions (Dubai summer)
Endurance events
After severe exertion for recovery

For the typical gym session under 60 minutes: water is equivalent and better for teeth.

The protection strategy (for regular sports drink users)

Before

Brush teeth before, not after, exercise

During

Sip through a reusable straw (reduces tooth contact)
Don't hold in the mouth
Rinse with plain water between sips when possible

After

Rinse immediately with plain water
Wait 30 minutes before brushing (enamel is softened)
Sugar-free xylitol gum helps during the wait

What's in the typical sports drink

Gatorade / Powerade (example composition)

pH: ~3.0 (very acidic)
Sugar: 6 g per 100ml
Sodium, potassium (the useful bit)
Artificial colours

Sugar-free versions

pH: often still 2.5–3.5 (still acidic!)
No sugar (good)
Still erosive due to acid

Zero-sugar electrolyte tablets (LMNT, Nuun)

Higher pH (less acidic)
No sugar
Better for teeth

Coconut water — worth considering

pH: 5 (much less acidic)
Natural electrolytes
Some sugar
Moderately tooth-friendly as a natural alternative

Plain water + salt

For extended exercise, plain water plus a pinch of salt matches electrolyte needs without the acid or sugar — at zero cost to teeth.

Energy drinks — worse

Energy drinks (Red Bull, Monster) combine high acid + high sugar + caffeine, and are often sipped over hours. Among the most erosive drinks sold.

For endurance athletes

Long-distance running, cycling, and triathlon need significant carbohydrate + electrolyte replacement. Options to reduce dental impact:

Gels instead of constant drinks (brief exposure then water rinse)
Plain water on the bike; electrolytes at stations
Post-exercise chocolate milk (moderately tooth-friendly)

References

Journal of the American Dental Association — Sports drinks
International Journal of Sports Medicine