Question

When researchers implanted tumor cells in rodents, they found that as compared to unstressed animals, rodents who were in uncontrollable stress situations:?

Answer 1

Stress and negative emotions have also been linked to cancer's rate of progression. To explore a possible connection between stress and cancer, experimenters have implanted tumor cells into rodents or given them carcinogens (cancer-producing sub- stances). Those rodents also exposed to uncontrollable stress, such as inescapable shocks, were more prone to cancer (Sklar & Anisman, 1981). With immune systems weakened by stress, tumors developed sooner and grew larger. TLDR: When researchers injected rats with carcinogens and then applied tons of stress the cancer spread faster.