Friday, Jul 24, 2026 The claims desk. Receipts included. POWERED BY LENZ ↗
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HEALTH

The Claim

Sugar-free soft drinks sweetened with non-sugar sweeteners (for example, Coca-Cola Zero Sugar) are as harmful to teeth as sugar-sweetened soft drinks.

Verified by Lenz ·

The Short Version

The evidence does not support a blanket claim of equal dental harm. Sugar-free soft drinks can damage teeth through acid-related enamel erosion at levels that may be similar to sugary soft drinks, but sugar-sweetened drinks also raise cavity risk through fermentable sugars. That extra cariogenic pathway makes sugary drinks generally more harmful overall to teeth.

Caveats

  • The main missing context is the difference between dental erosion and dental caries: sugar-free drinks may match sugary drinks on erosion, but not on cavity formation.
  • Much of the strongest evidence for sugar-free drinks concerns in vitro erosion studies, which do not fully capture real-world factors such as saliva, drinking habits, and fluoride exposure.
  • Dental-practice blogs and promotional summaries overstate the issue; the most reliable sources are public-health bodies and peer-reviewed reviews.

The Receipts

  1. Dietary free sugar and dental caries in children: A systematic review and meta-analysis

    PubMed Central

  2. Caregiver-Reported Sugar-Sweetened Beverage Consumption and ...

    CDC

  3. Dental erosion and severe tooth decay related to soft drinks

    PubMed Central

  4. Impact of unhealthy food and beverage consumption on children’s oral health: a systematic review and meta-analysis

    Nutrition Reviews (Oxford Academic)

  5. Effect of Sugar-Sweetened Beverages on Oral Health: a systematic review

    European Journal of Public Health (White Rose ePrints)

  6. Sugars and dental caries

    World Health Organization

  7. Damage from Carbonated Soft Drinks on Enamel

    National Institutes of Health (PMC)

  8. Effect of a Common Diet and Regular Beverage on Enamel Erosion in Cold and Room Temperatures

    PubMed Central

  9. AGD Official Dental Policies | Position Statements

    Academy of General Dentistry

  10. The erosive potential of sugar-free waters on cervical dentin

    Journal of the American Dental Association (JADA Foundational Science)

+ 21 more sources — see the full list on Lenz

Filed Under

Coca-Cola Zero Sugar

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