Artificial Sweeteners (Aspartame, Sucralose, Acesulfame-K)
The question

Is Artificial Sweeteners (Aspartame, Sucralose, Acesulfame-K) safe in protein powder?

AvoidProtein powder

Non-caloric synthetic sweeteners. IARC classified aspartame as a possible carcinogen (Group 2B) in 2023. Sucralose and Ace-K alter gut microbiome and may disrupt glucose metabolism.

What the research flags

  • Aspartame: IARC Group 2B possible carcinogen (2023) — based on limited evidence of hepatocellular carcinoma
  • Sucralose alters gut microbiome composition in animal studies
  • Acesulfame-K: metabolized to acetoacetamide — possible carcinogen at high doses [inference]
  • Paradoxical weight gain suggested in some studies — possible insulin response triggering

Regulatory
WHO (2023): non-sugar sweeteners not recommended for long-term use or weight management

Other protein powder ingredients on file

Sources & references

  1. [1]
    Peer-reviewedPubMed / NCBI — pubmed.ncbi.nlm.nih.gov · ref 37552940
  2. [2]
    Peer-reviewedPubMed / NCBI — pubmed.ncbi.nlm.nih.gov · ref 29038170
  3. [3]
    RegulatoryInternational regulator — aspartame-hazard-and-risk-assessment-results-released

Research disclaimer: Ratings reflect peer-reviewed research and regulatory assessments available at the time of publication, not the dose or formulation of any specific protein powder product. This is not medical advice.