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. 2023 Dec;130(13):1611-1619.
doi: 10.1111/1471-0528.17548. Epub 2023 May 22.

Combined healthy lifestyle in early pregnancy and risk of gestational diabetes mellitus: A prospective cohort study

Linjing Wu  1 , Jing Ouyang  1 , Yuwei Lai  1 , Ping Wu  1 , Yi Wang  1 , Yixiang Ye  1 , Jingyi Wang  1 , Mengyan Hu  1 , Jijuan Zhang  1 , Jiajing Xu  1 , Xue Yang  2   3 , Jiaying Yuan  4 , Bin Zhao  5 , Xingyue Song  6 , Shijiao Yan  7   8 , Chuanzhu Lv  9   10 , Gang Liu  1   11 , An Pan  1 , Xiong-Fei Pan  3   12   13
Affiliations

Combined healthy lifestyle in early pregnancy and risk of gestational diabetes mellitus: A prospective cohort study

Linjing Wu et al. BJOG. 2023 Dec.

Abstract

Objective: To examine the association of a combined healthy lifestyle in early pregnancy with gestational diabetes mellitus (GDM) risk.

Design, setting and population: A Chinese prospective cohort study with 6980 pregnant women.

Methods: Individual modifiable lifestyle factors were assessed in early pregnancy and a combined lifestyle score was derived from the sum of the lifestyle factors, with a higher score indicating a healthier lifestyle. The association of a combined healthy lifestyle with GDM risk was examined.

Main outcome measures: Gestational diabetes mellitus was diagnosed in middle pregnancy according to the International Association of Diabetes and Pregnancy Study Group criteria or diagnoses in medical records.

Results: Overall, 501 (7.2%) pregnant women were diagnosed with GDM. Being physically active (total energy expenditure in upper three quintiles, i.e. ≥100.1 metabolic equivalent of task [MET]-hours/week; odds ratio [OR] 0.76, 95% confidence interval [CI] 0.63-0.92), healthy diet (total intake of vegetables and fruits ≥5 times/day; OR 0.74, 95% CI 0.59-0.94), sufficient sleep (night-time sleep duration ≥7 hours/night; OR 0.66, 95% CI 0.48-0.90) and healthy weight (early-pregnancy BMI <24.0 kg/m2 ; OR 0.57, 95% CI 0.46-0.71) were associated with lower GDM risk. The GDM risk decreased linearly across the combined lifestyle score (Ptrend <0.001): women with 2, 3 and 4 lifestyle factors compared with those with 0-1 factor had 38% (OR 0.62, 95% CI 0.46-0.84), 57% (OR 0.43, 95% CI 0.31-0.58) and 66% (OR 0.34, 95% CI 0.22-0.52) lower risks of GDM, respectively.

Conclusion: A healthy lifestyle in early pregnancy was associated with a substantially lower GDM risk.

Keywords: combined lifestyle; diet; gestational diabetes mellitus; physical activity; pregnancy; sleep; weight.

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