Growth, body composition and metabolic profile of 8-year-old children exposed to metformin in utero
Abstract
OBJECTIVES: To investigate the possible long-term effects of metformin exposure on growth and development of the offspring born to mothers with polycystic ovary syndrome (PCOS). The drug passes through the placenta and can potentially influence the fetus.
PATIENTS AND METHODS: This is a follow-up study of a randomized, controlled trial on PCOS women, randomized to metformin or placebo in pregnancy. Out of 37 children aged 7-9 years, 25 agreed to participate. Primary outcome measures were growth, body composition and metabolic parameters.
RESULTS: There were no differences in height, weight or body composition between those exposed to metformin and those exposed to placebo. We found a higher fasting glucose level in the metformin group (4.93 mmol/L vs. 4.60 mmol/L, p = 0.04). In the metformin group there was a trend towards higher systolic blood pressure (106 mmHg vs. 101 mmHg, p = 0.05) and a lower LDL cholesterol level (2.42 mmol/L vs. 2.99 mmol/L, p = 0.07).
CONCLUSION: Metformin exposure during fetal life does not seem to influence growth and body composition at the age of 8 years. A higher fasting glucose level and a possible higher systolic blood pressure and lower LDL cholesterol level in the metformin group may be coincidental and should be further explored.
How strong is the evidence?
Evidence Hub reads this as a randomized trial, done in people. Its evidence level is 2 of 5 (High · randomized trial). Randomized trials of a reasonable size are the strongest single-study design. Reported size: 37 participants or records.
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