This randomized phase III trial studies whether changes in diet and physical activity can
increase the length of survival without the return of cancer (progression-free survival)
compared with usual care in patients with previously treated stage II, III, or IV ovarian,
fallopian tube, or primary peritoneal cancer. A healthy diet and physical activity program
and counseling may help patients make healthier lifestyle choices. It is not yet known
whether changes in diet and exercise may help increase progression-free survival in patients
with previously treated cancer.