Nonnutritive sweeteners and cardiometabolic health: a systematic review and meta-analysis of randomized controlled trials and prospective cohort studies. Azad, M. B., Abou-Setta, A. M., Chauhan, B. F., Rabbani, R., Lys, J., Copstein, L., Mann, A., Jeyaraman, M. M., Reid, A. E., Fiander, M., MacKay, D. S., McGavock, J., Wicklow, B., & Zarychanski, R. CMAJ: Canadian Medical Association journal = journal de l'Association medicale canadienne, 189(28):E929–E939, July, 2017.
Nonnutritive sweeteners and cardiometabolic health: a systematic review and meta-analysis of randomized controlled trials and prospective cohort studies [link]Paper  doi  abstract   bibtex   
BACKGROUND: Nonnutritive sweeteners, such as aspartame, sucralose and stevioside, are widely consumed, yet their long-term health impact is uncertain. We synthesized evidence from prospective studies to determine whether routine consumption of non-nutritive sweeteners was associated with long-term adverse cardiometabolic effects. METHODS: We searched MEDLINE, Embase and Cochrane Library (inception to January 2016) for randomized controlled trials (RCTs) that evaluated interventions for nonnutritive sweeteners and prospective cohort studies that reported on consumption of non-nutritive sweeteners among adults and adolescents. The primary outcome was body mass index (BMI). Secondary outcomes included weight, obesity and other cardiometabolic end points. RESULTS: From 11 774 citations, we included 7 trials (1003 participants; median follow-up 6 mo) and 30 cohort studies (405 907 participants; median follow-up 10 yr). In the included RCTs, nonnutritive sweeteners had no significant effect on BMI (mean difference -0.37 kg/m2; 95% confidence interval [CI] -1.10 to 0.36; I2 9%; 242 participants). In the included cohort studies, consumption of nonnutritive sweeteners was associated with a modest increase in BMI (mean correlation 0.05, 95% CI 0.03 to 0.06; I2 0%; 21 256 participants). Data from RCTs showed no consistent effects of nonnutritive sweeteners on other measures of body composition and reported no further secondary outcomes. In the cohort studies, consumption of nonnutritive sweeteners was associated with increases in weight and waist circumference, and higher incidence of obesity, hypertension, metabolic syndrome, type 2 diabetes and cardiovascular events. Publication bias was indicated for studies with diabetes as an outcome. INTERPRETATION: Evidence from RCTs does not clearly support the intended benefits of nonnutritive sweeteners for weight management, and observational data suggest that routine intake of nonnutritive sweeteners may be associated with increased BMI and cardiometabolic risk. Further research is needed to fully characterize the long-term risks and benefits of nonnutritive sweeteners. Protocol registration: PROSPERO-CRD42015019749.
@article{azad_nonnutritive_2017,
	title = {Nonnutritive sweeteners and cardiometabolic health: a systematic review and meta-analysis of randomized controlled trials and prospective cohort studies},
	volume = {189},
	issn = {1488-2329},
	shorttitle = {Nonnutritive sweeteners and cardiometabolic health},
	url = {https://www.ncbi.nlm.nih.gov/pubmed/28716847},
	doi = {10.1503/cmaj.161390},
	abstract = {BACKGROUND: Nonnutritive sweeteners, such as aspartame, sucralose and stevioside, are widely consumed, yet their long-term health impact is uncertain. We synthesized evidence from prospective studies to determine whether routine consumption of non-nutritive sweeteners was associated with long-term adverse cardiometabolic effects.
METHODS: We searched MEDLINE, Embase and Cochrane Library (inception to January 2016) for randomized controlled trials (RCTs) that evaluated interventions for nonnutritive sweeteners and prospective cohort studies that reported on consumption of non-nutritive sweeteners among adults and adolescents. The primary outcome was body mass index (BMI). Secondary outcomes included weight, obesity and other cardiometabolic end points.
RESULTS: From 11 774 citations, we included 7 trials (1003 participants; median follow-up 6 mo) and 30 cohort studies (405 907 participants; median follow-up 10 yr). In the included RCTs, nonnutritive sweeteners had no significant effect on BMI (mean difference -0.37 kg/m2; 95\% confidence interval [CI] -1.10 to 0.36; I2 9\%; 242 participants). In the included cohort studies, consumption of nonnutritive sweeteners was associated with a modest increase in BMI (mean correlation 0.05, 95\% CI 0.03 to 0.06; I2 0\%; 21 256 participants). Data from RCTs showed no consistent effects of nonnutritive sweeteners on other measures of body composition and reported no further secondary outcomes. In the cohort studies, consumption of nonnutritive sweeteners was associated with increases in weight and waist circumference, and higher incidence of obesity, hypertension, metabolic syndrome, type 2 diabetes and cardiovascular events. Publication bias was indicated for studies with diabetes as an outcome.
INTERPRETATION: Evidence from RCTs does not clearly support the intended benefits of nonnutritive sweeteners for weight management, and observational data suggest that routine intake of nonnutritive sweeteners may be associated with increased BMI and cardiometabolic risk. Further research is needed to fully characterize the long-term risks and benefits of nonnutritive sweeteners. Protocol registration: PROSPERO-CRD42015019749.},
	language = {eng},
	number = {28},
	journal = {CMAJ: Canadian Medical Association journal = journal de l'Association medicale canadienne},
	author = {Azad, Meghan B. and Abou-Setta, Ahmed M. and Chauhan, Bhupendrasinh F. and Rabbani, Rasheda and Lys, Justin and Copstein, Leslie and Mann, Amrinder and Jeyaraman, Maya M. and Reid, Ashleigh E. and Fiander, Michelle and MacKay, Dylan S. and McGavock, Jon and Wicklow, Brandy and Zarychanski, Ryan},
	month = jul,
	year = {2017},
	pmid = {28716847},
	pmcid = {PMC5515645},
	keywords = {8 Ignorance and funding bias, Adolescent, Adult, Biais de financement, Body Mass Index, Cardiovascular Diseases, Humans, Metabolic Syndrome, Non-Nutritive Sweeteners, Obesity, PRINTED (Fonds papier), Prospective Studies, Publication Bias, Randomized Controlled Trials as Topic, Waist Circumference},
	pages = {E929--E939},
}
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