Body Composition and Hormonal Change in the Perimenopause to Menopause Transition

Changes in body composition, particularly increased adiposity (body fat) around the abdomen are extremely common during this transition. Many women notice that weight gathers more easily, feels harder to shift, or redistributes from the hips and thighs to the midsection. These changes can feel frustrating, especially if your lifestyle hasn’t changed, but they are rooted in clear physiological mechanisms.

Oestrogen plays a significant role in how the body regulates fat storage, metabolism, and insulin sensitivity. As levels of oestrogen fluctuate and eventually decline, the body becomes more inclined to store fat centrally, particularly around the abdomen. This shift isn’t simply about calories in and calories out, it’s a complex interaction between hormones, stress responses, sleep quality, and metabolic regulation.

Adiposity during this transition can feel like your usual strategies no longer work, or that your body is responding differently to food, movement, and stress. Many women describe feeling “inflamed,” “puffy,” or as though their body has changed shape without warning. These experiences are common and reflect the body adapting to a new hormonal environment.

There are several approaches that can help support healthy body composition during this stage. Prioritising strength‑based movement helps maintain muscle mass, which naturally declines with age and hormonal change. Supporting sleep and stress regulation can reduce the metabolic impact of cortisol. Nourishing your body with balanced, protein‑rich meals and adopting evidence‑based lifestyle strategies tailored to your symptoms can also make a meaningful difference. The goal isn’t restriction, it’s understanding what your body needs now and working with it, not against it.