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Association between consumption of sweeteners and endometrial cancer risk: a systematic review and meta-analysis of observational studies

Huiping Li,Yeyuan Zhang,Yujing He,Jianing Huang,Jie Yao, Xieyan Zhuang

BRITISH JOURNAL OF NUTRITION(2024)

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Abstract
The purpose of this study is to further investigate the relationship between sweetener exposure and the risk of endometrial cancer (EC). Up until December 2022, a literature search in an electronic database was carried out utilizing PubMed, Web of Science, Ovid, and Scopus. The odds ratio (OR) and 95 % confidence interval (CI) were used to evaluate the results. Sweeteners were divided into nutritional sweeteners (generally refers to sugar, such as sucrose and glucose) and non-nutritional sweeteners (generally refers to artificial sweeteners, such saccharin and aspartame). Ten cohort studies and two case-control studies were eventually included. The study found that in 12 studies, compared with the non-exposed group, the incidence rate of EC in the sweetener exposed group was higher (OR = 1 & BULL;15, 95 % CI = [1 & BULL;07, 1 & BULL;24]). Subgroup analysis showed that in 11 studies, the incidence rate of EC in the nutritional sweetener exposed group was higher than that in the non-exposed group (OR = 1 & BULL;25, 95 % CI = [1 & BULL;14, 1 & BULL;38]). In 4 studies, there was no difference in the incidence rate of EC between individuals exposed to non-nutritional sweeteners and those who were not exposed to non-nutritional sweeteners (OR = 0 & BULL;90, 95 % CI = [0 & BULL;81, 1 & BULL;01]). This study reported that the consumption of nutritional sweeteners may increase the risk of EC, whereas there was no significant relationship between the exposure of non-nutritional sweeteners and the incidence of EC. Based on the results of this study, it is recommended to reduce the intake of nutritional sweeteners, but it is uncertain whether use of on-nutritional sweeteners instead of nutritional sweetener.
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Key words
Nutritional sweetener,Non-nutritional sweetener,Endometrial cancer,Risk,Meta-analysis
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