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Study Links Artificial Sweeteners to Multigenerational Metabolic Changes

4/18/2026

Summary

Story summary

New research indicates artificial sweeteners like sucralose and stevia may cause multigenerational metabolic changes.
A Chilean study found mice that consumed these sweeteners passed changes to offspring, without ingestion, with altered gut bacteria and gene activity.
The findings are limited to mice, so experts urge caution in sweetener use.
The International Sweeteners Association says assessments remain unchanged and calls for long-term research, and moderation is advised for pregnant individuals.

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Story summary

New research indicates artificial sweeteners like sucralose and stevia may cause multigenerational metabolic changes.
A Chilean study found mice that consumed these sweeteners passed changes to offspring, without ingestion, with altered gut bacteria and gene activity.
The findings are limited to mice, so experts urge caution in sweetener use.
The International Sweeteners Association says assessments remain unchanged and calls for long-term research, and moderation is advised for pregnant individuals.