Cancer Etiology

Cancer is a complex group of diseases with many possible causes and contributing risk factors. These causes and risk factors are associated with your physiology, diet, lifestyle, stress level, environment, genetics, and many other factors.

Here is a list of  some of the causes and contributing co-factors that can trigger the development of cancer in your body. Use this information to help determine how to reduce your risk of developing cancer.

Recreational Drugs
Smoking (Tobacco)
Drinking excess alcohol

Environment
Environmental toxins, e.g. radon gas, RF radiation, (e.g. microwaves)
Work environments, e.g. asbestos , benzene
Agricultural practices, e.g. pesticides
Household products, e.g. detergents, cleaning products, sprays
Cosmetics, e.g. facial/body creams, soaps, antiperspirants, hair color
Pollution, e.g. air, water
Other carcinogens, infectious agents


Biological/Physiological
Weak immune system
High blood glucose
High insulin levels
Insulin resistance
Cellular inflammation
Oxidative stress
Hormonal imbalance
Being overweight or obese
Narrowing of the arteries (large blood vessels) supplying the kidneys
High blood viscosity
Enzyme deficiencies
Impaired digestion
Toxicity

Diseases
Diabetes
Obesity
HIV/AIDS
Hepatitis B and C (causes of liver cancer)
Epstein-Barr virus (a cause of some childhood cancers)
Human immunodeficiency virus (HIV)
Hormonal conditions 
Conditions that affect the body’s tissue, such as lupus
Obstructive sleep apnea
Adrenal gland tumors
Thyroid problems
Note: Additional risk factors include anything that suppresses or weakens the immune system and inhibits the body's ability to fight infections and other health problems. 

Nutritional/Dietary
Refined sugar, flour
Lack of raw foods
Processed foods, e.g. canned, pasteurized, soy
Bad fats, e.g. fried meats, excess animal meat, trans fats, canola oil, vegetable oil
Food chemicals, e.g. GMOs, HFCS, artificial sweeteners, food dyes
Beverages, e.g. diet soda, tap water, cow's milk
Macronutrient imbalance
Vitamin deficiency (A, B, C, D, E, K2)
Mineral deficiency (selenium, zinc)
Other nutrient deficiency (pancreatic enzymes, Omega-3 EFAs, probiotics)

Nutritional Supplements
Synthetic vitamins
Herbal supplements

Lifestyle
High stress environment
Lack of exercise
Overexposure to sunlight (UV rays), tanning beds

Medical Practices
X-rays, Mammograms
Chemotherapy
Radiation
Dental practices, e.g. mercury fillings, root canals
Vaccines, e.g. Gardasil (human papillomavirus (HPV) vaccine)

Other Drugs/Medications
Steroids
Painkillers known as non-steroidal anti-inflammatory drugs (NSAIDs), such as ibuprofen  
Recreational drugs, such as cocaine, amphetamines and crystal methamphetamine
Other  medications, such as birth control pills, cold remedies, decongestants, over-the-counter pain relievers and some prescription drugs

Mental
Emotional stability
Stressful work environment
Negative emotions/thinking, e.g. anger, jealousy, regret
Financial problems
Lack of knowledge/awareness

Family
Race (being of African or Caribbean origin)
Genetics (gene mutation)
Congenital (certain defects you're born with)
Family cooking habits

Societal
Racism, sexism, etc.
Other isms

In most cases, people will have multiple causes and co-factors that contribute to developing cancer. Usually, there is no one single factor that triggers the development of cancer in someone's body.

Note: For more information about cancer, refer to the Death to Diabetes book, Death to Cancer ebook, training program, online training course; and, the Death to Diabetes website, blog and Facebook Page.

Website References:
http://www.cancer.org/cancer/cancercauses/
http://www.mayoclinic.org/diseases-conditions/cancer/basics/causes/con-20032378 
http://www.cancer.gov/about-cancer/causes-prevention 
http://www.cancerresearchuk.org/about-cancer/causes-of-cancer
http://www.ncbi.nlm.nih.gov/pubmed/25554788
http://www.ncbi.nlm.nih.gov/pubmed/?term=cancer+causes
http://www.cancer.org/cancer/cancercauses/othercarcinogens/generalinformationaboutcarcinogens/known-and-probable-human-carcinogens