The Impact of Stress on Cancer: What You Need to Know

Chronic stress can make cancer worse and help it spread. Studies in animals and human cells show that stress hormones, which are natural in humans, play a big role in this process. Norepinephrine, a hormone released when we're stressed, helps tumors grow by forming new blood vessels and spreading cancer cells. It also activates certain immune cells that can protect tumors and wake up dormant cancer cells.

Another stress hormone, glucocorticoids, can stop cancer cells from dying naturally (a process called apoptosis) and make them resistant to chemotherapy. These hormones can also prevent the immune system from attacking cancer cells.

Although some studies suggest that stress might lower survival rates in cancer patients, the evidence isn't strong. Managing stress is important for cancer patients because it can improve their quality of life and possibly help with treatment. Techniques like mindfulness, counseling, and exercise can help reduce stress.