The effectiveness of an "intensive" versus "non-intensive" dietary intervention will be assessed in 120 patients on adjuvant therapy for breast cancer (BC) in a prospective, randomized controlled study for a total of 3 years. The eligibility of participants will be verified according to the inclusion/exclusion criteria at the screening visit; therefore, after a detailed explanation of the study protocol, Informed Consent will be signed. After the recruitment, subjects will be randomized into an "intensive" (ARM A) and "non-intensive" (ARM B) dietary intervention group. After the 6 month treatment period, patients will be followed up for the following 18 months.
ARM A: Visits will be set up monthly in order to assess body weight, waist circumference, diet compliance (etc...) for all period of the BC adjuvant treatment (6 months).
ARM B: Visits will be set up only at the baseline, after 6 months namely at the end.
No drug treatment will be given to patients during the trial.