Endocrinology sits at the heart of obstetrics and gynaecology, from the menstrual cycle and fertility to the hormonal changes of pregnancy. Our free MRCOG Part 1 endocrinology revision notes explain the key hormones and feedback systems in a clear, logical way.

Mapped to the RCOG Part 1 syllabus, the notes cover the hypothalamic-pituitary-ovarian axis, the menstrual cycle, puberty and the menopause, steroid hormone synthesis and action, the endocrinology of pregnancy and the placenta, and thyroid, adrenal and pancreatic function. Each topic is linked to the clinical scenarios that commonly appear in single best answer (SBA) questions, such as interpreting hormone profiles, understanding causes of amenorrhoea and recognising the effects of pregnancy on endocrine tests.

Whether you're building your understanding of hormonal control or revising high-yield topics before the exam, these notes make endocrinology structured and memorable. They're free to access and designed to work alongside your question practice.

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