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The effects of artificial- and stevia-based sweeteners on lipid profile in adults: a GRADE-assessed systematic review, meta-analysis, and meta-regression of randomized clinical trials.

It has been posited that Non-nutritive sweeteners (NNS) intake may affect lipid profile. However, its proven effects on lipid profile are unclear, as clinical studies on this topic have produced inconsistent results. To fill this gap in knowledge, this systematic review and meta-analysis of randomized controlled trials (RCTs) sought to evaluate the effects of artificial- and stevia-based sweeteners consumption on lipid profile markers. To identify eligible RCTs, a systematic search up to April 2021 was completed in PubMed/Medline, Scopus, and EMBASE, using relevant keywords. A random-effect model was utilized to estimate the weighted mean difference (WMD) and 95% confidence (95% CI) for TG, TC, and LDL. On the other hand, a fixed-effect model was used to estimate the WMD and 95% CI for HDL. Fourteen RCTs were included in the present meta-analysis. The pooled analysis revealed that NNS did not affect TG (WMD:-1.31, 95% CI:-5.89, 3.27 mg/dl), TC (WMD:-2.27,95% CI:-7.61,3.07 mg/dl), LDL (WMD:1,95% CI: -2.72, 4.71 mg/dl), and HDL (WMD:0.06, 95% CI:-0.62,0.73 mg/dl). Subgroup analysis showed that NNS may be related to a small, but statistically significant, increase in LDL (WMD:4.23, 95% CI:0.50,7.96 mg/dl) in subjects with normal levels of LDL (<100 mg/dl). We found that consumption of artificial- and stevia-based sweeteners is not associated with lipid profile changes in adults. This study has been registered at PROSPERO (registration number: CRD42021250025).