Core nutritional shifts
- Protein: the non-negotiable
- Target 1.0–1.2g per pound of lean body mass daily — this is significantly more than most women eat. Muscle protein synthesis becomes less efficient with declining estrogen, meaning you need more protein to achieve the same anabolic response. Distribute evenly across meals (30–40g per meal minimum). Prioritise leucine-rich sources: eggs, poultry, fish, dairy, legumes.
- Fibre
- Target 25–35g daily. Supports gut microbiome diversity, which declines during perimenopause and affects estrogen metabolism (estrobolome). Helps stabilise blood sugar and supports cardiovascular health. Sources: vegetables, legumes, ground flaxseed (also contains lignans — mild phytoestrogenic benefit).
- Healthy fats
- Omega-3 rich fish 2–3x weekly (salmon, sardines, mackerel). Extra virgin olive oil as primary cooking fat. Avocado, nuts, seeds. Reduce refined seed oils (sunflower, soybean, corn) — they promote inflammatory omega-6 dominance.
- Calcium from food
- Target 1,200mg daily from food first. Dairy, sardines with bones, leafy greens, fortified foods. Food calcium is preferable to supplemental calcium for cardiovascular safety.
- Blood sugar management
- Insulin resistance increases during perimenopause. Eat protein and fat before carbohydrates at each meal ("glucose hacking"). Reduce refined carbohydrates and sugar. This single dietary shift can reduce hot flashes, energy crashes, and mood swings. A continuous glucose monitor (CGM) for 2 weeks is eye-opening for seeing personal patterns.
- Phytoestrogen-rich foods
- Ground flaxseed (2 tbsp daily), fermented soy (tempeh, miso, natto), legumes. These provide mild estrogenic support via food — gentler and safer than concentrated supplements. Flaxseed has the best evidence for reducing hot flash frequency.