What you eat during perimenopause quietly shapes the next two decades of your health. The metabolic shift is real: insulin sensitivity often declines, bone loss accelerates, and the body redistributes weight towards the middle. Nutrition can't stop the transition, but it can determine how gracefully you move through it.
The four pillars
Protein. Muscle protects metabolism, and protein is its raw material. Spread it across the day: some at every meal does more than one huge dinner. How much is right for you depends on your weight, your kidneys and what else is going on, so ask your doctor or a dietitian for the number rather than taking one from a page.
Calcium and vitamin D. Bone loss accelerates in the years around menopause. Dairy, leafy greens, fortified foods, and vitamin D form the foundation. Whether you need a supplement, and how much, is a blood test away; ask for it.
Phytoestrogens. Soy foods (tofu, tempeh, edamame) contain isoflavones. NICE's guideline NG23 says there is some evidence they may help with hot flushes, that their safety is not established, and that products vary and can interact with other medicines. Food is one thing; a supplement is a question for your doctor.
Anti-inflammatory patterns. The Mediterranean pattern is the one we would point you to, because it is the easiest to keep to for twenty years: olive oil, fish, vegetables, whole grains, little that comes in a packet. No diet eliminates perimenopause, but this one is kinder to live with.