**Overview of Breast Cancer** Breast cancer involves the uncontrolled growth of abnormal breast cells, forming tumors that can spread. Starting in milk ducts or lobules, early forms (in situ) are not life-threatening. Invasive cancers can spread to lymph nodes or other organs, which can be fatal. Treatment varies by person, cancer type, and spread, often combining surgery, radiation, and medication. Both men and women can get breast cancer, though it's more common in women, especially after age 50. Improved awareness, research, and early screening have increased survival rates and reduced deaths, making early diagnosis crucial for a cure or extended life. Understanding Carcinogens: Carcinogens are agents that cause cancer in humans, categorized as chemical (including biological), physical, and oncogenic viruses. They primarily cause cancer by altering cellular DNA, leading to uncontrolled cell division and preventing natural cell death, ultimately forming tumors that can s...