Oestrogen

The relationship between hormonal contraception and weight change is more nuanced than commonly believed. This article reviews what the evidence shows about contraceptive-related weight gain, what happens after stopping, and why individual experiences vary considerably.

Perimenopause in the 40s significantly alters fat distribution, muscle mass, sleep, and appetite regulation. Weight management requires specific adaptations: higher protein targets, resistance training emphasis, sleep optimisation, and realistic rate expectations.

Unintentional weight loss in women warrants medical investigation (thyroid, coeliac disease, malignancy, eating disorders). Intentional weight loss is driven by calorie deficit. Female-specific factors affecting weight include menstrual cycle hormonal fluctuations (scale variation of 1–3 kg), perimenopause fat redistribution, PCOS insulin resistance, and hypothyroidism. This article covers both contexts.

Spot reduction — losing fat from a specific body region through targeted exercise — is not physiologically possible. Thigh fat distribution is determined by genetics and hormonal factors, primarily oestrogen. This article reviews the evidence and explains what actually reduces lower body fat.

Menopause-related weight gain has specific hormonal causes. Evidence-based dietary strategies and a small number of supplements have genuine clinical support — here is what the research shows.