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About Breast Cancer > Breast Cancer Myths

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  • Breast Cancer Myths
    • Myth: Breast cancer only affects middle-aged or older women
    • Myth: Men do not get breast cancer
    • Myth: Breast cancer is more common in women with bigger breasts
    • Myth: Finding a lump in your breast means you have breast cancer
    • Myth: Breast pain is a definite sign of breast cancer
    • Myth: A mammogram can cause breast cancer or spread it
    • Myth: All breast cancers are the same
    • Myth: If you have a family history of breast cancer, you are likely to develop breast cancer, too
    • Myth: If a BRCA mutation is detected in your DNA, you will definitely develop breast cancer
    • Myth: A breast injury can cause breast cancer
    • Myth: Consuming sugar causes breast cancer
    • Myth: Antiperspirants and deodorants cause breast cancer
    • Myth: Carrying a phone in your bra can cause breast cancer
    • Myth: Bras with underwire can cause breast cancer
    • Myth: Breast cancer is contagious
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Breast Cancer Myths

By NBCF team

Last updated on Aug 10, 2026

Medically reviewed on Mar 11, 2026
by: Lillie D. Shockney, RN, BS, MAS, HON-ONN-CG

Misinformation about breast cancer can lead to myths and misconceptions about breast cancer causes, risk, symptoms, screening, diagnosis, and treatment. With so much information available online and through social media, it can be difficult to know what to believe.

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Why is it important to know common breast cancer myths?

Understanding the facts surrounding breast cancer can help you make informed decisions about your health and recognize when it’s important to talk with a healthcare provider. Exploring common breast cancer myths to separate fact from fiction and learn what the latest evidence says about breast cancer is a great way to stay informed and empowered about your breast health.


Quick navigation — jump to myths

Myth: Breast cancer only affects middle-aged or older women
Myth: Men do not get breast cancer
Myth: Breast cancer is more common in women with bigger breasts
Myth: Finding a lump in your breast means you have breast cancer
Myth: Breast pain is a definite sign of breast cancer
Myth: A mammogram can cause breast cancer or spread it
Myth: All breast cancers are the same
Myth: If you have a family history of breast cancer, you are likely to develop breast cancer, too
Myth: If a BRCA mutation is detected in your DNA, you will definitely develop breast cancer
Myth: A breast injury can cause breast cancer
Myth: Consuming sugar causes breast cancer
Myth: Antiperspirants and deodorants can cause breast cancer
Myth: Carrying a phone in your bra can cause breast cancer
Myth: Bras with underwire can cause breast cancer
Myth: Breast cancer is contagious
Jump to Cancer Type:
  • Myth: Breast cancer only affects middle-aged or older women
  • Myth: Men do not get breast cancer
  • Myth: Breast cancer is more common in women with bigger breasts
  • Myth: Finding a lump in your breast means you have breast cancer
  • Myth: Breast pain is a definite sign of breast cancer
  • Myth: A mammogram can cause breast cancer or spread it
  • Myth: All breast cancers are the same
  • Myth: If you have a family history of breast cancer, you are likely to develop breast cancer, too
  • Myth: If a BRCA mutation is detected in your DNA, you will definitely develop breast cancer
  • Myth: A breast injury can cause breast cancer
  • Myth: Consuming sugar causes breast cancer
  • Myth: Antiperspirants and deodorants can cause breast cancer
  • Myth: Carrying a phone in your bra can cause breast cancer
  • Myth: Bras with underwire can cause breast cancer
  • Myth: Breast cancer is contagious
Myth: Breast cancer only affects middle-aged or older women

Myth: Breast cancer only affects middle-aged or older women

While most breast cancer is more common in middle-aged and older women, a diagnosis can happen at any age. Younger women can develop breast cancer, although it is less common.

Learn more

Myth: Men do not get breast cancer

Men can get breast cancer, too. About 1% of breast cancers occur in men. Although male breast cancer is rare, men should know the signs and symptoms and report any unusual changes to their healthcare provider.

Learn more

Myth: Breast cancer is more common in women with bigger breasts

There is no connection between breast size and cancer risk. However, larger breasts may sometimes make it more challenging to examine the breast or notice certain changes.

Learn more

Myth: Finding a lump in your breast means you have breast cancer

Not all breast lumps are breast cancer. Most breast lumps are benign (non-cancerous). However, all changes in your breasts—including a lump—should be evaluated by a healthcare provider.s

Learn more

Myth: Breast pain is a definite sign of breast cancer

Breast pain is not usually a sign of breast cancer, but breast cancer can sometimes cause pain. It’s important to tell your doctor about any changes in your breast, including breast pain.

Learn more

Myth: A mammogram can cause breast cancer or spread it

Mammograms use a low dose of x-ray radiation, but the amount of radiation is very small. The benefits of mammography screening generally outweigh the potential risks from radiation exposure. Breast compression during a mammogram does not cause breast cancer or cause cancer to spread.

Learn more

Myth: All breast cancers are the same

Not all breast cancer is the same. There are many different types and subtypes of breast cancer, each with its own unique characteristics. These differences can affect treatment and prognosis.u

Learn more

Myth: If you have a family history of breast cancer, you are likely to develop breast cancer, too

Having a family history of breast cancer, particularly in close relatives, can increase your risk. However, most people diagnosed with breast cancer do not have a family history. Knowing your family history can help you and your doctor determine the best screening schedule for you.

Learn more

Myth: If a BRCA mutation is detected in your DNA, you will definitely develop breast cancer

Having an inherited mutation in the BRCA1 or BRCA2 gene increases the risk of developing breast cancer, but it does not mean that you will definitely develop breast cancer.

Learn more

Myth: A breast injury can cause breast cancer

Injuries to the breast do not cause breast cancer. However, an injury can sometimes cause benign (non-cancerous) changes or can draw attention to an irregularity that had previously formed.

Learn more

Myth: Consuming sugar causes breast cancer

Eating sugar does not directly cause breast cancer. However, consuming too much of any food—including sugar—can contribute to weight gain, obesity, and health issues, which can increase breast cancer risk.

Learn more

Myth: Antiperspirants and deodorants can cause breast cancer

There is no scientific evidence linking the use of underarm antiperspirants or deodorants to the development of breast cancer.

Learn more

Myth: Carrying a phone in your bra can cause breast cancer

There is no established evidence that carrying a cell phone in your bra causes breast cancer.

Learn more

Myth: Bras with underwire can cause breast cancer

No matter what the type, bras do not cause breast cancer. However, bras that do not fit well can cause discomfort, swelling, or pain.r

Learn more

Myth: Breast cancer is contagious

Breast cancer is not contagious. You cannot catch breast cancer from someone else, and you cannot give breast cancer to someone else.

Learn more
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