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Assisted reproductive techniques are less successful in obese women, who also have higher complication rates in pregnancy and labor. However, recent research suggests a lifestyle intervention designed to help obese women lose 5% to 10% of their body weight did not improve perinatal outcomes after subsequent treatment for infertility (Mutsaerts MA et al. N Engl J Med. 2016;374:1942-1953). The study compared birth rates of obese women who had attempted to lose weight prior to infertility treatment with women who had infertility treatment alone.
Slomski A. Weight Loss And Birth Rate in Obese Women. JAMA. 2016;316(4):385. doi:10.1001/jama.2016.9510