The INCORRECT Statement is D: Increased Insulin Sensitivity
The correct answer is D) Increased insulin sensitivity - this statement is NOT correct. Women with PCOS characteristically have DECREASED insulin sensitivity (insulin resistance), not increased insulin sensitivity. 1, 2
Why Each Statement is Correct or Incorrect:
A) Chronic anovulation or hypertrichosis, infertility - CORRECT
Women with PCOS commonly present with chronic anovulation leading to oligomenorrhea, hirsutism (hypertrichosis), and infertility. These are core reproductive features of the syndrome. 3, 4
B) Increased androgen production - CORRECT
Hyperandrogenism is a hallmark feature of PCOS. The core pathophysiology involves overproduction of androgens primarily from ovarian thecal cells, manifesting as elevated free testosterone levels and clinical signs like hirsutism and acne. 4, 2, 5
C) First-line treatment: weight loss - CORRECT
Weight loss through lifestyle modification is definitively recommended as first-line therapy for overweight and obese women with PCOS. 3, 1 The 2013 Endocrine Society guideline explicitly states that weight loss strategies beginning with calorie-restricted diets should be the initial approach for overweight/obese adolescents and women with PCOS. 3 The 2020 International Evidence-Based Guideline reinforces that lifestyle management is the first-line management in the intervention hierarchy for PCOS, with multicomponent lifestyle intervention including diet, exercise, and behavioral strategies being central to management. 1
D) Increased insulin sensitivity - INCORRECT
This is the false statement. PCOS is characterized by DECREASED insulin sensitivity (insulin resistance), not increased sensitivity. 1, 2 Insulin resistance is present in PCOS irrespective of BMI and affects both lean and overweight women, though obesity further exacerbates it. 1 The compensatory hyperinsulinemia resulting from insulin resistance is one of the two major external triggers that promote androgen overproduction in the ovaries. 6, 2 This creates a vicious cycle where hyperandrogenism induces obesity, and obesity/insulin resistance aggravate hyperandrogenism symptoms. 2
Clinical Pitfall to Avoid:
Do not confuse the therapeutic goal (improving insulin sensitivity through weight loss or metformin) with the underlying pathophysiology (insulin resistance/decreased insulin sensitivity). The disease state involves insulin resistance; treatment aims to reverse this.