The Study
Association between intake of non-sugar sweeteners and health outcomes: systematic review and meta-analyses of randomised and non-randomised controlled trials and observational studies
This study looked at lots of other studies to see if sugar-free sweeteners help or hurt people. It found tiny hints that they might slightly affect weight or sugar cravings, but nothing strong or clear. It's like seeing a shadow—you can guess something might be there, but you can't be sure.
Analysis score
Maximum 85 for a systematic review with meta-analysis.
Where the score came from
Scientists looked at many studies to see if sugar-free sweeteners (like those in diet soda) make people healthier or sicker.
Where does this study sit?
Reviews of RCTs (Meta-analyses)
Max 100Randomized Trials
Max 90Reviews of Cohort Studies
Max 85Cohort Studies
Max 72Reviews of Case-Control Studies
Max 63Case-Control Studies
Max 58Cross-Sectional & Case Series
Max 50Expert Opinion
Max 552 / 100
Quality score
Systematic reviews and meta-analyses of cohort studies. They sit above a single cohort study but below a single randomized trial, because the underlying evidence is still observational.
Key takeaways
Summary
Based on the study abstract and findings.
- 1The changes are tiny — like losing a few pounds or cutting a spoonful of sugar daily — and we can't be sure they matter for real health because the studies were small and short.
- 2In adults: sugar-free sweeteners slightly lowered body weight (by 0.6 BMI points) and blood sugar (by 0.16 mmol/L), and cut sugar intake by 89.7 grams per day.
- 3In kids: they slowed weight gain compared to sugar, but didn't change overall weight much.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
The BMJ
Year
2019
Authors
Ingrid Toews, S. Lohner, D. Küllenberg de Gaudry, Harriet Sommer, J. Meerpohl
Related Content
Videos (1)
Claims (5)
Adults who consume non-sugar sweeteners within recommended limits have a small average decrease in body mass index and fasting blood glucose levels compared to those who do not.
In children, non-sugar sweeteners do not lead to different changes in body weight, dental health, or rates of adverse events compared to sugar or placebo.
Children who consume non-sugar sweeteners instead of sugar experience a smaller increase in body mass index z-score over time compared to children who consume sugar.
When adults replace sugar with non-sugar sweeteners, their daily sugar intake decreases by about 89.7 grams.
In adults, using non-sugar sweeteners does not lead to measurable changes in body weight, risk of cancer, heart disease, kidney disease, mood, or cognitive function.
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.