Combined Nutrition and Exercise Interventions in Women With Breast Cancer History

Inclusion Criteria: * Women aged 30 to 65 years. * Previous diagnosis of breast cancer (stages I-III) confirmed by medical records. * Completion of primary oncological treatment (surgery, radiotherapy, chemotherapy, and/or hormone therapy) at least 3 months before enrollment. * Absence of active cancer or evidence of recurrence. * Medical clearance to perform physical exercise. * Willingness to participate in dietary and/or exercise interventions for 12 weeks. * Ability to attend evaluation and intervention sessions and comply with study procedures. * Signed written informed consent. Exclusion Criteria: * Active cancer, metastasis, or ongoing chemotherapy or radiotherapy. * Severe cardiovascular, respiratory, renal, hepatic, or metabolic disease that contraindicates exercise. * Musculoskeletal or neurological conditions limiting participation in physical activity. * Severe psychiatric disorders or cognitive impairment affecting adherence to the intervention. * Current participation in another clinical trial or structured lifestyle intervention. * Use of dietary supplements, appetite regulators, or pharmacological agents affecting metabolism during the study period. * Pregnancy, breastfeeding, or intention to become pregnant during the study. * Inability to comply with the intervention schedule or follow-up assessments.