Cancer survivors often look for information and advice from their health care providers about food choices, physical activity, and dietary supplement use to improve their quality of life and long-term survival. Diet is thought to be partly responsible for about 30% to 40% of all cancers. But diet alone is unlikely to be the "cause" or "cure" of cancer. Making healthy choices can be physically and mentally rewarding at any age and your body needs more of it than usual after your operation. It needs it to repair cells, fight infection, and heal incisions. Breast cancer is the most common cancer in women, and as treatments have improved the number of breast cancer survivors has grown. Weight gain is an important concern that impacts on cancer outcomes and general health in survivorship. Recurrence rates and survival in early-stage disease have been shown to be adversely affected by increased body weight in most studies. After a diagnosis of breast cancer, women tend to re-evaluate their nutrition and health practices. Most women believe they must make significant dietary changes to ensure good outcomes following breast cancer treatment. However, a healthy diet is only one of several factors that can affect the immune system; exercise and stress management are just as important to improving your overall health and wellbeing.