Weight Loss Interventions Improve Key Features of PCOS

TOPLINE:

Weight loss interventions using medication or behavioral changes can improve insulin resistance, hormonal markers, and menstrual frequency in women with polycystic ovary syndrome (PCOS), according to a new meta-analysis. Losing weight may not significantly reduce hirsutism or improve quality of life in women with the condition, however.

METHODOLOGY:

• Researchers systematically reviewed randomized controlled trials comparing weight loss interventions to usual care in women with PCOS.
• They focused on 12 studies with behavioral interventions (mainly diets with modest energy deficits), nine trials that used glucagon-like peptide 1 (GLP-1) receptor agonists, and eight studies using other weight loss medications.
• A total of 1529 participants were included in the analysis.
• The investigators synthesized the data using a random-effects meta-analysis with Knapp-Hartung adjustment to examine pooled mean differences.

TAKEAWAY:

• Menstrual frequency increased by 2.64 menses per year (95% CI, 0.65-4.63) with weight loss interventions.
• “To our knowledge, this is the first review to show a clinically significant association in improvement in menstrual frequency with weight loss interventions, an important indicator of subsequent fertility and an important outcome for women,” the researchers wrote.
• Glycemic control also improved, with a mean reduction in homeostatic model assessment of insulin resistance of 0.45 (95% CI, −0.75 to −0.15).
• Free androgen index decreased by an average of 2.03 (95% CI, −3.0 to −1.07).

IN PRACTICE:

“Clinicians may use these findings to counsel women with PCOS on the expected improvements in PCOS markers after weight loss and direct patients toward interventions,” the authors of the study wrote. “Because weight loss programs are cost-effective interventions to improve cardiometabolic risk, they may be particularly valuable for this population at elevated risk.”

SOURCE:

The study was led by Jadine Scragg, PhD, with the Nuffield Department of Primary Care Health Sciences at the University of Oxford, Oxford, England. It was published online on November 4 in Annals of Internal Medicine.

LIMITATIONS:

Interventions using GLP-1 agonists were dosed for glycemic control rather than weight management. The studies in the meta-analysis were relatively few and heterogeneous. Data were insufficient to assess ovulation and acne.

DISCLOSURES:

The meta-analysis was supported by grants from the National Institute for Health and Care Research School for Primary Care Research. Authors disclosed ties to Nestlé Health Science and Second Nature.

This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication.