Ovulation in obese and lean women

Posted by Chantel M. Research contributed by the US National Library of Medicine National Institutes of Health

The prevalence of childbearing age obesity is wide spreading in US, approximately, 50% of them are either overweight [body mass index (BMI) 25-29.9 kg/m(2)] or obese (BMI ≥ 30 kg/m(2)).
Ovulation in obese and lean women
Obesity is known to interfere with reproductive outcomes in polycystic ovary syndrome.  According to the University of Queensland, In searched MEDLINE and several other databases from 2000 to September 2011 for studies reporting on OAT and reproductive outcomes. Data were synthesized to determine the risk ratio of reproductive outcomes (ovulation and pregnancy) in lean (BMI <25 kg/m(2)) as opposed to overweight or obese women. with  15 datasets (14 articles) obtained for analysis, included 905 subjects in the obese group and 879 subjects in the lean group, lean women had increased ovulation rates (RR 1.43, 95% CI 1.22-1.66) as compared to obese women. Pregnancy rates also showed a similar trend (RR 1.73, 95% CI 1.39-2.17). Reproductive outcomes were generally better in younger women, more recent studies and randomized controlled trials, posted in PubMed.
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