Common breast cancer myths

Does deodorant cause breast cancer? Can wearing an underwire bra increase your breast cancer risk? We dispel some common myths about breast cancer causes.

1. Can squeezing or being hit in the breast cause cancer?

Squeezing, pressing, rubbing or massaging your breasts or nipples will not cause breast cancer. Nor will having your nipple pierced.

An injury, such as falling or being hit in the breast, will not cause breast cancer either. 

Sometimes an injury to the breast can lead to a benign (not cancer) lump called fat necrosis.

Occasionally, a breast injury can make someone more aware of the area and they may notice an unusual breast change.

It’s important to see your GP if you notice any changes to your breasts that are new or unusual for you.

2. Do underwire bras cause breast cancer?

Underwire bras do not cause breast cancer.

If your bra is too tight, the wires can dig into your breasts and may cause discomfort, pain or swelling.

A well-fitting bra is important both for comfort and support.

3. Does deodorant cause cancer?

Using deodorant or antiperspirant does not cause breast cancer.

Claims that deodorants increase the risk of breast cancer have been around for many years. But there’s no evidence that they increase risk.

4. What does cause breast cancer?

Many different things affect your risk of getting breast cancer, including some things you cannot control.

There’s no single cause but your genes, lifestyle and environment all play a part.

You can reduce your risk of breast cancer by limiting alcohol, keeping to a healthy weight and being physically regularly active regularly.

Was this helpful?

Was this helpful?
Please tell us what you liked about it.
Please tell us why.
We’re sorry you didn’t find this helpful.
Please do not include personal details and be aware we cannot respond to comments.

Quality assurance

Last reviewed in October 2024. The next planned review begins in October 2026.

  • support-cta-icon-telephone

    Call our free helpline

    If you have any concerns about breast cancer, or just want to talk, our specialist nurses are here for you.

    Lines open: Monday to Friday - 9am to 4pm; Saturday - 9am to 1pm

  • support-cta-icon-email

    Explore ways to talk to our nurses

    It can be difficult to talk to someone in person about breast cancer concerns. Explore other ways you can ask a question.

Share this page