Fasting-mimicking Diet Intervention on Side Effects of Aromatase Inhibitors Treatment in Patients With Breast Cancer

Nutritional intervention via fasting-mimicking diet. Patients receiving adjuvant therapy with aromatase inhibitors will be randomized 1:1 into two arms: one intervention, where will receive nutritional counseling and the study diet for 5 days each month for 6 months,and a control one, where they will receive only nutritional counseling.