Read this as the food side of the same arc the rest of the site reads. The transition reshapes body composition before it reshapes scale weight; the SWAN cohort isolated this carefully, and the rate of fat-mass gain doubles at the start of the window while lean mass declines.[01] The studies that follow large cohorts also describe a shift in where the fat sits — more centrally, more abdominally — and the cardiometabolic signals that travel with that shift.[03] Diet is not the only lever, but it is the one most reliably under your hand.

Three threads of the literature are mature enough to write about with confidence for a woman in this window: the Mediterranean dietary pattern as the most consistently studied template, the dose–response between fibre intake and glycaemic markers, and the protein-distribution case for maintaining lean mass.[04][05][07] Each carries a different kind of evidence behind it — a primary-prevention trial, a WHO-commissioned meta-analytic series, a position paper of geriatric and nutrition societies. The shape that emerges across them is consistent enough to summarise on one page.

What the research examines

One nutrient on this page carries direct GB-authorised health claims: chromium contributes to the maintenance of normal blood glucose levels and to normal macronutrient metabolism.[09] The dietary patterns the trial literature converges on — Mediterranean, fibre at the SACN 30 g/day reference value, protein distributed across the day — sit upstream of the supplement question. We card chromium and a women-specific foundation multinutrient as authorised-claim recommendations, and cinnamon as a research-context note (no UK authorised claim, but recurs in the trial conversation around glycaemic markers).