The Study is Observational and Retrospective: Lifestyle, BMI and Activity Physical.

Investigators will use data from 428 women with a 5-yr primary diagnosis of BC (stages I-III at ages ≥30 \<75 anni). Half of this sample (N=214) who followed integrated lifestyle treatment of behavioral modification of diet and physical activity conducted by Pascale Institute since 2016; the other half (N=214) will be patients who were eligible to participate but did not for logistic reasons. The present study aims to enroll 428 women with prior primary diagnosis of breast cancer. Half of the patients (N = 214) had previously followed the lifestyle treatment of DEDiCa trial on the modification of eating and physical activity habits (Eudract n. 2015-005147-14) conducted by the Oncologic Institute Pascale in Naples (Italy) since Nov 2016; the other half of the patients were 214 who had refused to participate in the aforementioned trial for reasons unrelated to serious health conditions or progression of the disease.