Light-dark-shift stress

1. Light-dark-shift stress has no effect on lifespan in rats.

   “apparently such alterations did not unfavorably affect longevity of BN female rats”

   Animalswhole life-spanfemales

   Light-dark-shift stress, with special reference to spontaneous tumor incidence in female BN rats

   Journal of the National Cancer Institute·1 Mar 1986

1. Light-dark-shift stress has no effect on tumor incidence in rats.

   “Neither were these differences nor was the pattern of spontaneous tumors statistically significant.”

   Animalswhole life-spanfemales

   Light-dark-shift stress, with special reference to spontaneous tumor incidence in female BN rats

   Journal of the National Cancer Institute·1 Mar 1986

More on Tumor incidence