Insulin's Impact on Aromatization and Ovulation

In this lecture, Professor Ben Bikman delves into the metabolic aspects of female infertility, specifically focusing on the influence of insulin resistance. He begins by highlighting the high prevalence of infertility among women of reproductive age, with up to 15% affected globally, and particularly prevalent in regions with high rates of insulin resistance, such as Sub-Saharan Africa, South Asia, and the Middle East.

Insulin resistance, a condition where cells become less responsive to insulin, plays a crucial role in female infertility. Dr. Bikman explains that insulin resistance manifests in two main aspects: disrupted insulin signaling in cells and elevated blood insulin levels, known as hyperinsulinemia. These disruptions affect various stages of reproductive physiology, including oocyte development, ovulation, and implantation.

Dr. Bikman then provides a detailed explanation of the ovulatory cycle, emphasizing the interplay of hormones such as follicle-stimulating hormone (FSH), estradiol, and luteinizing hormone (LH) in regulating follicle growth, ovulation, and corpus luteum formation. He discusses how insulin resistance can interfere with this process, leading to poor oocyte quality, failed ovulation, and complications with implantation.

The lecture further explores conditions associated with insulin resistance and female infertility, notably polycystic ovary syndrome (PCOS). Dr. Bikman explains the Rotterdam criteria used for diagnosing PCOS, which include irregular ovulation, signs of hyperandrogenism, and ovarian cysts. He elucidates how insulin resistance contributes to the development of PCOS by inhibiting aromatase activity, leading to reduced estradiol production and disrupted ovulation.

Finally, Dr. Bikman discusses treatment approaches for PCOS, including the use of insulin-sensitizing medications like metformin and dietary interventions such as low-carbohydrate or ketogenic diets. He underscores the importance of addressing insulin resistance to improve ovulatory function and mitigate the most common form of female infertility.

(00:01) Introduction to Female Infertility and Metabolism

(01:14) Global Prevalence of Female Infertility and its Association with Insulin Resistance

(02:23) Understanding Insulin Resistance and its Impact on Female Reproductive Physiology

(05:30) The Ovulatory Cycle and the Role of Hormones in Reproduction

(11:14) Effects of Insulin Resistance on Oocyte Development and Ovulation

(13:27) Impact of Insulin Resistance on Implantation and Uterine Health

(17:19) Polycystic Ovary Syndrome (PCOS) and its Relationship with Insulin Resistance

(33:44) Treatment Approaches for PCOS: Medications and Dietary Interventions

Learn more at https://www.insuliniq.com

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