Short-Term Fasting During Chemotherapy in Patients With Gynecological Cancer- a Randomized Controlled Cross-over Trial

Hypothesis: Fasting before (48h) and one day after chemotherapy may protect normal cells from the adverse effects of chemotherapy. Design: Within a randomized controlled pilot trial 30 female patients with gynecological cancer (ovarian and breast cancer)and 4-6 scheduled chemotherapies will be randomized to fast 60-72 hours during the first half of chemotherapies or during the second half of chemotherapies and to proceed normocaloric food intake during the other cycles.Sequence of fasting and normocaloric food intake will be randomized. Assessments of adverse effects, quality of life and laboratory values take place 24 and 7 days after each chemotherapy. Statistical analyses compare summarized differences of fasted and non-fasted chemotherapy cycles.