To evaluate a nutritional intervention for women newly diagnosed with breast cancer on a weight control and physical activity program.

56 women newly diagnosed with breast cancer from the Department of Medical Oncology of La Paz University Hospital, Madrid, Spain.

A nutritional and physical activity intervention program that consisted of two individual nutritional consults and five nutritional group lectures was conducted by physicians of the Nutrition Unit during one year.

Inclusion Criteria:

• Years: ≥18
• Sex: Female
• Newly diagnosed breast cáncer

Exclusion Criteria:

• Patients who have disseminated disease.
• Associated eating behavior disorders.
• Patients with dementia, mental illness or decreased cognitive function.
• Consumption of drugs or substances to lose weight (except in those cases in which it is suspended 15 days before starting the study).
• Presence of disease that may interfere with weight loss: severe psychiatric illness, uncontrolled hypothyroidism.
• Pregnant or breastfeeding women.