How to check ingredients backed by studies

Manual method: PubMed

1. Read the full ingredient list — ignore front-of-pack claims.
2. Search PubMed for each unfamiliar ingredient + "safety" or "health effects."
3. Prioritize quality — systematic reviews and human trials over single animal studies.
4. Check the claims — does "sugar-free" match what the sweetener actually does in human studies?

Faster: scan with biteful

Point your iPhone at a label. biteful identifies ingredients, evaluates claims against published research, and returns Good, Mixed, or Avoid with PubMed links.