What things cause cancer?

Cancer is a complex disease that can be caused by a variety of factors, including:

1. Genetic factors: Some people are more likely to develop cancer due to inherited genetic mutations. These mutations can be passed down from parents to children or can occur spontaneously.

2. Environmental factors: Exposure to certain environmental factors can increase the risk of cancer, including:

- Cigarette smoke

- Asbestos

- Benzene

- Formaldehyde

- Radiation

- Ultraviolet (UV) radiation from the sun or tanning beds

- Certain chemicals used in pesticides and herbicides

3. Lifestyle factors: Certain lifestyle choices can also increase the risk of cancer, such as:

- Poor diet, including diets high in processed meats, red meats, and sugary drinks

- Lack of physical activity

- Obesity

- Alcohol consumption

- Smoking

4. Infections: Some infections, such as human papillomavirus (HPV), hepatitis B virus (HBV), and hepatitis C virus (HCV), can increase the risk of certain types of cancer.

It is important to note that cancer is often caused by a combination of factors, and not everyone who is exposed to a risk factor will develop cancer.