Frequent question: What risk factor contributes to early onset of breast cancer?

The risk for breast cancer increases with age; most breast cancers are diagnosed after age 50. Genetic mutations. Inherited changes (mutations) to certain genes, such as BRCA1 and BRCA2. Women who have inherited these genetic changes are at higher risk of breast and ovarian cancer.

What causes early onset breast cancer?


The BRCA1 and BRCA2 genes are the most common, representing more than 50% of all genes associated with early-onset breast cancer. Women who carry pathogenic variants have an increased lifetime risk of breast and other cancers and are at higher risk of developing early-onset breast cancer.

What is early onset breast cancer?

Objectives. Early onset breast cancer, defined as breast cancer occurring in women under the age of 45, accounts for approximately 10% of new breast cancer cases in the United States.

What is a risk factor for developing cancer?

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.

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What are some common risk factors associated with breast cancer?

Being a woman and getting older are the main risk factors for breast cancer.

Risk Factors You Can Change

  • Not being physically active. Women who are not physically active have a higher risk of getting breast cancer.
  • Being overweight or obese after menopause. …
  • Taking hormones. …
  • Reproductive history. …
  • Drinking alcohol.

What environmental risk factors exist for breast cancer?

Which environmental factors increase the risk for breast cancer?

  • Tobacco smoke (both active and passive exposure)
  • Dietary (eg, charred and processed meats)
  • Alcohol consumption.
  • Environmental carcinogens (eg, exposure to pesticides, radiation, and environmental and dietary estrogens)

What is early onset of cancer?

For the purposes of the study, early-onset cancers were classified as cancer wherein age 39 is >1 standard deviation below the mean age of diagnosis for that cancer type and young-adult cancer was defined as cancer wherein age 39 is <1 standard deviation below the mean age at cancer diagnosis.

What are the early signs of breast cancer?

Early signs

  • lumps inside the breast or underarm area.
  • changes in breast size and shape.
  • pain in a specific area that does not go away.
  • prominent veins on the surface of the breast.
  • nipple discharge that starts suddenly.
  • a sore or rash on the nipple.
  • swelling, redness, or darkening of the breast.

What are the symptoms of breast cancer?

What Are the Symptoms of Breast Cancer?

  • New lump in the breast or underarm (armpit).
  • Thickening or swelling of part of the breast.
  • Irritation or dimpling of breast skin.
  • Redness or flaky skin in the nipple area or the breast.
  • Pulling in of the nipple or pain in the nipple area.
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What is the single greatest risk factor for developing cancer?

Living habits. Tobacco. The use of tobacco products is the single most important factor in increasing cancer risk. The hazards of tobacco are due to a large amount of carcinogenic compounds: those which are already in the tobacco product and those that form during smoking.

What environmental factors can cause cancer?

Environmental factors that cause cancer

  • Lifestyle factors (nutrition, tobacco use, physical activity)
  • Natural occurring exposures (ultraviolet light, radon gas, infectious agents)
  • Medical treatments (radiation and medicine)
  • Workplace and household exposures.
  • Pollution.

Who is more susceptible to cancer?

Risk factors

That’s why most people diagnosed with cancer are 65 or older. While it’s more common in older adults, cancer isn’t exclusively an adult disease — cancer can be diagnosed at any age.

Is early menarche a risk factor for breast cancer?

These findings confirm that young age at menarche and old age at menopause increase breast cancer risk. Many factors known to affect breast cancer risk, including childbearing patterns, height, and BMI, are also associated both with women’s age at menarche and with their age at menopause.

Which breast is more prone to cancer?

Breast cancer is more common in the left breast than the right. The left breast is 5 – 10% more likely to develop cancer than the right breast. The left side of the body is also roughly 5% more prone to melanoma (a type of skin cancer).

What is the strongest risk factor for breast cancer?

Established risks:

  • Being a Woman. Just being a woman is the biggest risk factor for developing breast cancer. …
  • Genetics. …
  • Certain Breast Changes. …
  • Pregnancy History. …
  • Using HRT (Hormone Replacement Therapy) …
  • Light Exposure at Night. …
  • Exposure to Chemicals in Cosmetics. …
  • Exposure to Chemicals in Plastic.
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