What is cancer and state four causes
Cancer is a group of diseases characterized by the uncontrolled growth and spread of abnormal cells in the body.
Four causes of cancer include:
1. Genetic mutations: Changes in the DNA of cells, either inherited or acquired, can lead to uncontrolled cell growth and the development of cancer.
2. Environmental factors: Exposure to carcinogens such as tobacco smoke, UV radiation, and certain chemicals can increase the risk of developing cancer.
3. Lifestyle factors: Unhealthy lifestyle choices such as poor diet, lack of physical activity, and excessive alcohol consumption can contribute to the development of cancer.
4. Infections: Certain viruses, bacteria, and parasites have been linked to an increased risk of cancer, such as human papillomavirus (HPV) and Helicobacter pylori.