worry does not directly cause breast cancer, but long-term worry may have an effect on health in general and may indirectly lead to the growth of cancer. Stress that lasts for a long time can weaken the immune system, mess up hormone levels, and make people do bad things like smoking or eating too much, all of which can raise the risk of cancer.
Stress may also change how the body deals with inflammation, which is linked to the growth of cancer. Even though dealing with stress is important for your general health, it's even more important to live a healthy life, complete with regular exercise, a balanced diet, and enough sleep, to lower your risk of getting cancer. But it's important to remember that breast cancer is a complicated disease that is affected by many things, including genes, the surroundings, and how you live your life. Regular tests and finding breast cancer early are still very important for lowering the risk of getting it.