What question did this study set out to answer?

To assess the effects of diet-induced weight loss on endocrine, metabolic, and anthropometric characteristics in obese, insulin-resistant women with polycystic ovary syndrome.

September 1, 1995The Journal of Clinical Endocrinology & Metabolism

Restored insulin sensitivity but persistently increased early insulin secretion after weight loss in obese women with polycystic ovary syndrome.

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Why the study?

Does diet-induced weight reduction improve insulin sensitivity and metabolic variables in obese women with PCOS?

Population

57 women: 13 obese, insulin-resistant women with polycystic ovary syndrome undergoing weight loss, 21…

Comparison

Diet-induced weight reduction to a weight stable… vs Weight-stable women with PCOS and normal control…

Design

Cohort

Follow-up

mean 14.9 months

Authors

JHJan HolteUppsala University TBT. BerghUppsala University CBChristian BerneInstitut de l’Elevage

Discussion

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Implication

Supports obesity as primary driver of insulin resistance in PCOS; leaves open randomized trials on clinical outcomes.

Key Points

To assess the effects of diet-induced weight loss on endocrine, metabolic, and anthropometric characteristics in obese, insulin-resistant women with polycystic ovary syndrome.
Evaluated 13 obese women with PCOS before and after diet-induced weight loss (mean diet duration 14.9 months, mean weight loss 12.4 kg) achieving weight stability.
Measured insulin sensitivity with euglycemic insulin clamps, insulin secretion and glucose tolerance via intravenous glucose tolerance tests, and anthropometric fat distributions.
Compared outcomes against two weight-stable non-dieting groups matched to post-diet BMI: 21 women with PCOS and 23 healthy control subjects.
Dietary weight reduction improved the insulin sensitivity index by 132% (P < 0.001), reduced plasma free fatty acids by 32% (P < 0.01), raised sex hormone-binding globulin by 35% (P < 0.01), and decreased truncal-abdominal skinfolds by 28% (P < 0.0001) to control levels.
Early insulin response to intravenous glucose, gonadotropins, and androstenedione did not change significantly after weight loss; among women with normal glucose tolerance, early insulin increment remained higher in post-diet PCOS (P < 0.05) and non-diet PCOS (P < 0.01) versus controls.
Variation in insulin sensitivity in women with PCOS was strongly predicted by free fatty acids and truncal-abdominal fat (model R2 = 0.67), with strong inverse correlations across all groups.

Structured PICO

Does diet-induced weight reduction improve insulin sensitivity and metabolic variables in obese women with PCOS?

Population

57 women: 13 obese, insulin-resistant women with polycystic ovary syndrome (PCOS) undergoing weight loss, 21 weight-stable women with PCOS, and 23 normal control subjects.

Intervention

Diet-induced weight reduction to a weight stable level (mean duration 14.9 months)

Comparator

Weight-stable (no diet) women with PCOS (n=21) and normal control subjects (n=23) matched to the post-weight loss BMI of the intervention group

Outcome

Insulin sensitivity (euglycemic insulin clamp), insulin secretion, glucose tolerance, basal sex steroid hormones, gonadotropins, free fatty acids, skin folds, and waist hip ratiosurrogate

Weight loss in obese women with PCOS restores insulin sensitivity to levels comparable to BMI-matched controls, suggesting insulin resistance is largely driven by obesity rather than PCOS itself.

Cite This Study

Holte et al. (1995) studied this question.

synapsesocial.com/papers/6a6fd2ade5469ee92be0a6e2 https://doi.org/10.1210/jcem.80.9.7673399

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Restored insulin sensitivity but persistently increased early insulin secretion after weight loss in obese women with polycystic ovary syndrome.

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Restored insulin sensitivity but persistently increased early insulin secretion after weight loss in obese women with polycystic ovary syndrome.

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

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