I believe that weight gain is an especially important health issue for women with breast cancer. More than half of women with breast cancer experience weight gain during treatment. Reports show that weight gain during treatment is linked to a poorer chance of recovery. A dietitian is an expert in dietetics; that is, human nutrition and the regulation of diet. A dietitian alters their patient’s nutrition based upon their medical condition and individual needs. Dietitians are regulated healthcare professionals licensed to assess, diagnose, and treat nutritional problems.