Fasting-Mimicking Diet as an Adjunct to Neoadjuvant Chemotherapy for Hormone-Receptor-Positive Breast Cancer

The FMD will consist of a triweekly 4-day regimen of a plant-based, calorie-restricted (827± 100 kcal on day 1；637 ± 100 kcal on days 2-4), low-carbohydrate, low-protein diet. The FMD will be repeated up to a maximum of eight consecutive cycles. Participants receive the FMD for 2 days prior to and on the day and one day after each cycle of chemotherapy.