What environmental factor increases the chance of cancer?

The most significant environmental risk factor for cancer is tobacco, whether they’re using products like cigarettes, pipes, cigars, chewing tobacco, snuff or vaping, or being exposed to secondhand smoke.

How do environmental factors play a role in cancer?

Environmental factors such as X-rays, gamma rays, radiation emitted from radioactive materials, aniline type dyes, cigarette, free radicals, asbestos, silica dust, air pollution, food additives, various drugs, some of the chemicals used in perfumes, oncogenic viruses and bacteria play an important role in the risk of …

What are environmental carcinogens?

Environmentally derived substances or chemicals that may enter into the human body through food, air, or materials are called environmental carcinogens. Various natural and anthropogenic substances present in the environment are responsible for two thirds of cancers.

What are 4 factors that might cause cancers?

General risk factors for cancer include:

  • Older age.
  • A personal or family history of cancer.
  • Using tobacco.
  • Obesity.
  • Alcohol.
  • Some types of viral infections, such as human papillomavirus (HPV)
  • Specific chemicals.
  • Exposure to radiation, including ultraviolet radiation from the sun.

What percentage of cancer is caused by the environment?

Lifestyle behaviors and environmental factors account for around 70-90% of cancer cases, according to new research published in the journal Nature. Share on Pinterest Researchers say up to 90% of cancer cases are caused by lifestyle and environmental factors, such as smoking.

What are environmental factors?

Environmental factors include temperature, food, pollutants, population density, sound, light, and parasites. The diversity of environmental stresses that have been shown to cause an increase in asymmetry is probably not exclusive; many other kinds of stress might provide similar effects.

What are some common environmental risk factors?


  • Air contaminants.
  • Toxic waste.
  • Radiation.
  • Disease-causing microorganisms and plants.
  • Pesticides.
  • Heavy metals.
  • Chemicals in consumer products.
  • Extreme temperatures and weather events.

What is an example of a carcinogen that occurs in nature?

Aflatoxin B1, which is produced by the fungus Aspergillus flavus growing on stored grains, nuts and peanut butter, is an example of a potent, naturally occurring microbial carcinogen. Certain viruses such as hepatitis B and human papilloma virus have been found to cause cancer in humans.

How can environmental carcinogens be reduced?

Outside of the workplace, people can also take steps to limit their exposure to known carcinogens, such as quitting smoking, limiting sun exposure, limiting alcohol drinking, or, for those of the appropriate age, having HPV and HBV vaccination.

What is the major risk factor for the majority of cancers?

The most common risk factors for cancer include aging, tobacco, sun exposure, radiation exposure, chemicals, and other substances, some viruses and bacteria, certain hormones, family history of cancer, alcohol, poor diet, lack of physical activity, or being overweight.

What causes cells to become cancerous?

Cells become cancerous after mutations accumulate in the various genes that control cell proliferation. According to research findings from the Cancer Genome Project, most cancer cells possess 60 or more mutations.

What are three environmental causes of cancer?

Common environmental factors that contribute to cancer death include exposure to different chemical and physical agents ( tobacco use accounts for 25–30% of cancer deaths), environmental pollutants, diet and obesity (30–35%), infections (15–20%), and radiation (both ionizing and non-ionizing, up to 10%).

What cancers are caused by environmental factors?

Some environmental factors are linked to specific types of cancer. For example, we know asbestos causes lung cancer, Benzedrine (a chemical in dyes) causes bladder cancer, and tobacco causes lung and other cancers.

What do environmental factors affect cancer?

The two most important categories of environmental factors causing cancer are tobacco and diet. Other important categories of environmental factors include alcohol, ultraviolet and ionizing radiation, medical procedures and drugs, occupation, reproductive behavior, pollution, and infection.

Is cancer caused by the environment or genetics?

Researchers have learned a lot about how cancer genes work. But many cancers are not linked with a specific gene . Cancer likely involves multiple gene mutations . Moreover, some evidence suggests that genes interact with their environment. This further complicates our understanding of the role genes play in cancer.