Cancer Risk Factors and Reducing Risks for Cancer

Overview

Risk factors increase a person’s chances of developing a disease. For cancer, some risk factors apply to many cancers while other risk factors may apply to a specific type of cancer. In addition, risk factors can be categorized as:

Non-modifiable: These risk factors cannot be controlled or changed to reduce a person’s risk for developing a disease or condition.
Modifiable: These risk factors can be controlled or changed, usually through health behavior changes. By changing or controlled a risk factor, people potentially may be able to reduce their risk for developing a disease or condition.

Non-modifiable risk factors for many different types of cancer include:

Age: The risk of developing many cancers increases with age.
Race or Ethnicity: For some cancers, a person’s race or ethnicity may increase their risk of certain types of cancers. For example,
- People of Ashkenazi Jewish descent have a high risk of developing certain cancers than other groups of people.
- People who are white have a higher risk of developing cancers such as skin cancer.
- People who are Black have a higher risk of developing cancers such as stomach and lung cancers.
Genetics: Some individuals may have inherited gene mutations that increase their risk of developing certain types of cancer.
Exposure to radiation: Previous exposure to radiation, such as during medical treatments or nuclear accidents, can increase the risk of developing various types of cancer.
Family or personal history: For many cancers, having a family history of cancer (especially of a parent or sibling) increases a person’s risk for the same type of cancer.

Modifiable risk factors that apply to several types of cancer include:

Smoking: Smoking tobacco is a significant risk factor for several types of cancers, including lung, throat, and mouth cancers.
Obesity: Excess body weight and high body mass index (BMI) increases the risk of breast, cervical, kidney, pancreas, and other cancers.
Lack of physical activity: Leading a sedentary lifestyle and not engaging in regular physical activity increases the risk of various types of cancer.
Unhealthy diets: Poor dietary habits, such as consuming high amounts of processed foods, sugary drinks, and red meat, can contribute to an increased risk of many cancer.
Excessive alcohol consumption: Drinking alcohol in excess can raise the risk of developing various types of cancer.
Unsafe sex practices: Human papillomavirus (HPV) is a sexually transmitted infection that can cause several types of cancer, including cervical, oropharyngeal (throat), anal, and vulva cancers.

To reduce the risk of cancer, individuals can take several actions:

Avoid tobacco use: Quitting smoking or never starting in the first place is crucial for reducing the risk not only for lung cancer but also for other types of cancers.
Maintain a healthy weight: By adopting healthy eating habits and engaging in regular physical activity, individuals can manage their weight and reduce their risk.
Be physically active: Regular exercise, both during adolescence and adulthood, has been associated with a decreased risk of developing cancer.
Follow a healthy diet: A healthy diet includes consuming plenty of fruits, vegetables, whole grains, lean proteins, and limiting processed foods and sugary drinks.
Limit alcohol consumption: It is recommended to drink alcohol in moderation or avoid it altogether to reduce the risk of various cancers.
Follow safe-sex practices: Consistently and correctly use condoms and dental dams to decrease the risk of HPV transmission.
Get HPV vaccine, if recommended. It is usually administered as a childhood vaccine but may be given in teens and young adults (up to age 26), or certain other high-risk populations.

While these actions can help reduce the risk of developing cancer, it's important to remember that everyone's situation is unique. It's always a good idea to consult with a healthcare provider for personalized advice and guidance.