Womens Health - PCOS Flashcards
Q: What is PCOS, and how common is it?
A: PCOS is an endocrine and metabolic pathology affecting 5–20% of reproductive-age women worldwide.
Q: What are the hallmark features of PCOS?
A: Ovarian dysfunction (irregular/absent periods), hyperandrogenism, and polycystic ovaries.
Q: List some common signs and symptoms of PCOS.
A: Amenorrhoea/oligomenorrhoea, weight gain, hirsutism, thinning hair or hair loss, oily skin, acne, and infertility.
Q: What complications are associated with PCOS?
A: T2DM, gestational diabetes, hypertension, dyslipidaemia, NAFLD, metabolic syndrome, endometrial cancer, anxiety, depression, and autoimmunity (e.g., Hashimoto’s thyroiditis).
Q: How does elevated LH affect ovarian function in PCOS?
A: Increased LH amplitude and pulses stimulate ovarian theca cells to produce more androgens, leading to reduced FSH levels and impaired aromatisation of androgens to oestrogen. This results in anovulation.
Q: How does insulin resistance (IR) contribute to PCOS?
Decreases hepatic SHBG synthesis, increasing active testosterone and DHT.
Increases ovarian and adrenal androgen production.
Leads to leptin resistance, increasing obesity risk.
Q: What percentage of women with PCOS exhibit insulin resistance?
A: 75% of lean women and 95% of obese women with PCOS exhibit IR.
Q: How does obesity exacerbate PCOS symptoms?
A: Obesity increases insulin resistance, adipogenesis, inflammatory adipokines (e.g., TNF-α), and androgen production, which worsen PCOS symptoms.
Q: What dietary and lifestyle factors contribute to chronic low-grade inflammation in PCOS?
A: A Western diet high in refined carbs, processed foods, trans-fats, low omega-3:6 ratio, lack of exercise, and metabolic endotoxaemia.
Q: What role does gut dysbiosis play in PCOS?
A: Altered microbiota and reduced microbial diversity can influence hormone secretions, inflammatory pathways, and islet β-cell proliferation, further exacerbating PCOS.
Q: What are some genetic and environmental risk factors for PCOS?
A:
Genetics: Polymorphisms in CYP genes (e.g., CYP11, CYP17).
Vitamin D deficiency: Linked to increased insulin sensitivity and reduced androgen levels.
Smoking: Associated with hyperandrogenism.
Q: What are the therapeutic aims in managing PCOS?
Decrease insulin resistance, improve glucose tolerance, reduce central obesity, decrease inflammation and oxidative stress, support liver detoxification, and regulate the HPA axis.
Q: How does weight loss improve PCOS symptoms?
A: A 5–10% weight loss can significantly improve insulin resistance, hormone levels, and overall symptoms.
Q: What dietary changes support blood glucose balance and insulin sensitivity in PCOS?
A:
Focus on low GI, high-fibre foods.
Avoid trans fats and processed foods.
Optimise omega-6:3 ratio.
Include chromium-rich foods and quality protein.
Q: What supplements can help address insulin resistance in PCOS?
A:
Cinnamon: Improves insulin sensitivity and reduces IGF-1.
Berberine: Insulin-sensitising (500 mg 3x daily).
Alpha-lipoic acid: Antioxidant, enhances glucose metabolism (600–1200 mg/day).
Vitamin D, magnesium, omega-3 fatty acids, and CoQ10.