Medical Oncologist
Treatment options
Risk-reducing mastectomy: the complete decision guide
A risk-reducing mastectomy removes healthy breast tissue in people with a high chance of developing breast cancer, such as BRCA carriers. It lowers risk greatly but not completely, and screening is a valid alternative. This page explains who it may suit, the options, the surgery and how to decide.
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Medically reviewed by Dr. Muralidhar MuddusettyConsultant Surgical Oncologist · MBBS (AIIMS), MS (Surgery, AIIMS), DNB (Surgical Oncology), MRCS (Edinburgh) · last reviewed September 2026, next review due September 2027
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On this page
- What is a risk-reducing mastectomy, and how do you decide?
- Situations where it may be discussed
- Options for managing high breast cancer risk
- The vocabulary, in plain language
- Honest realities about preventive mastectomy
- Steps many women take before deciding
- What the surgery and recovery usually involve
- What people assume about preventive mastectomy
- Common questions about risk-reducing mastectomy
The short answer
What is a risk-reducing mastectomy, and how do you decide?
A risk-reducing mastectomy, also called a preventive mastectomy, is surgery to remove healthy breast tissue in someone who does not have breast cancer in that breast, but has a high chance of developing it. It is mainly considered for people with an inherited change in a gene such as BRCA1, BRCA2, PALB2 or TP53, a very strong family history, or previous radiotherapy to the chest at a young age. The operation removes most, but not all, breast tissue, so it lowers the risk of breast cancer greatly without taking it to zero. It can be done on both breasts in someone who has never had cancer, or on the other breast in someone already diagnosed. Many women choose reconstruction at the same time. It is a major, permanent decision, and it is never urgent in the way cancer treatment can be. Alternatives include intensive screening with yearly breast MRI and mammograms, risk-reducing medicines in some cases, and lifestyle steps. Removing the ovaries may also be advised for BRCA carriers because of ovarian cancer risk. The right choice depends on your personal risk, age, health, family plans and how you feel about surgery and screening. Genetic counselling and time to reflect, with support from specialists and family, are central to deciding well.
It is for high-risk people
It is usually discussed only when inherited or other risk is well above average.
It lowers risk greatly but not fully
A small amount of breast tissue remains, so some risk remains.
There are alternatives
Close screening is a valid choice for many high-risk women.
This page gives general information only. Decisions should follow genetic counselling and specialist advice.Who it may suit
Situations where it may be discussed
Being in one of these groups does not mean you must have surgery. It means the option is worth talking through.
Inherited gene change
A confirmed harmful change in BRCA1, BRCA2 or another high-risk gene such as PALB2 or TP53.
Strong family history
Several close relatives with breast or ovarian cancer, especially at young ages, even without a found gene change.
Risk is estimated by a genetics team.Chest radiotherapy when young
Radiotherapy to the chest in childhood or early adulthood, for example for Hodgkin lymphoma.
Already diagnosed in one breast
Some women with cancer consider removing the other breast.
Most relevant when
- A high-risk gene change is found
- Diagnosed at a young age
- Screening the breast is very difficult
Your choices
Options for managing high breast cancer risk
Option
What it involves
Risk-reducing mastectomy
Removes most breast tissue to lower the chance of cancer developing
Intensive screening
Regular MRI and mammograms to find any cancer early, when it is most treatable
Risk-reducing medicines
Hormone-blocking tablets that may lower risk for some women
Removing the ovaries
Mainly to lower ovarian cancer risk in BRCA carriers, usually after family is complete
Healthy lifestyle
Activity, healthy weight and limiting alcohol support overall health
Not sure whether this applies to you?
Ask an oncologistWords you may hear
The vocabulary, in plain language
- Bilateral mastectomy
- Removal of both breasts.
- Contralateral mastectomy
- Removal of the other, unaffected breast in someone with cancer in one breast.
- Pathogenic variant
- A gene change known to raise the risk of cancer, sometimes called a mutation.
- Genetic counselling
- A session with a trained specialist to understand genetic test results and what they mean for you and your family.
- Nipple-sparing mastectomy
- Removal of breast tissue while keeping the skin and nipple.
- Lifetime risk
- The estimated chance of developing breast cancer over a whole life.
Talk to our team
Have a question about your situation?
Call the helpline or leave your details, and someone will help you arrange a consultation at the CION centre nearest you. One helpline serves every CION centre.
Call 1800 202 8726
Helpline open 24/7
Being straight with you
Honest realities about preventive mastectomy
This decision deserves an honest look at both benefits and costs.
It cannot remove all risk
Some breast cells remain on the skin and chest wall, so a small chance of breast cancer stays.
Feeling in the chest changes
Most women lose much of the feeling in the breast area and nipple, and cannot breastfeed.
Complications and further surgery are possible
Infection, wound problems and extra reconstruction operations happen for some women.
Screening is a reasonable alternative
Many high-risk women choose screening instead, and that choice is valid.
What this page cannot tell you
It cannot estimate your personal risk. A genetics and breast team can.
The path to a decision
Steps many women take before deciding
There is usually time to take each step carefully. Few women regret taking longer to decide.
Get genetic counselling and testing
Understanding whether you carry a gene change, and what it means, is the foundation of the decision.
Estimate your risk with specialists
A genetics or breast team can explain your likely lifetime risk and how surgery or screening changes it.
Meet a breast and reconstructive surgeon
Learn about the operation, reconstruction choices, recovery and appearance afterwards.
Talk to a counsellor or others who have faced it
Emotional support helps you explore fears, body image and hopes.
Involve family in a way that suits you
A partner or trusted relative can support the process, while the final choice remains yours.
About the operation
What the surgery and recovery usually involve
If you choose surgery, knowing what to expect helps you prepare practically and emotionally.
Types of mastectomy
Skin-sparing or nipple-sparing mastectomy is often possible for preventive surgery, depending on breast shape and risk.
Reconstruction choices
Implants, your own tissue or going flat are all options, and each has different recoveries.
Checking the removed tissue
The breast tissue is examined under a microscope, and occasionally an early, unexpected cancer is found.
Recovery time
Recovery ranges from a few weeks without reconstruction to a few months after flap reconstruction.
Commonly believed
What people assume about preventive mastectomy
Everyone with a BRCA mutation should have their breasts removed.
Surgery is one option; many carriers choose intensive screening instead.
Preventive mastectomy takes breast cancer risk to zero.
It lowers risk greatly, but a small chance remains.
The decision must be made quickly.
Preventive surgery is planned, and there is time to consider it.
After preventive surgery, no follow-up is needed.
You should still report changes, and other cancer risks may need checks.
Questions we are asked
Common questions about risk-reducing mastectomy
How much does preventive mastectomy lower breast cancer risk?
Studies in women with a high inherited risk show that removing both healthy breasts lowers the chance of developing breast cancer by a very large amount, often described as around nine in ten or more. Because a little tissue remains, the risk is not removed entirely. Your team can explain what this means for your situation.
Do I need genetic testing before deciding?
Genetic counselling and testing are strongly recommended if you are thinking about preventive surgery because of family history. Results help show how high your risk really is. Some women without a gene change still have high risk, and a genetics team can estimate this carefully.
Can I keep my nipples?
Nipple-sparing mastectomy is often possible for preventive surgery, depending on your breast size, shape and the position of the nipple. The nipple usually has much less feeling afterwards. Your surgeon will explain whether it suits you and any small remaining risk.
Will I still need breast screening after surgery?
Routine mammograms are usually not needed after both breasts have been removed. However, you should still know how your chest normally looks and feels, and report any lumps or changes. Your team will advise on follow-up, including checks for other cancers linked to your gene change.
Is there an age when I should have it?
There is no single right age. Timing often depends on the gene involved, the ages at which relatives were diagnosed, family and breastfeeding plans, and personal readiness. Many women use screening for some years and consider surgery later. A genetics team can help you plan.
Does it affect how I look and feel about my body?
It can. Many women feel relief from worry and are satisfied with their decision, while some find changes in appearance, sensation or intimacy hard. Reconstruction, counselling and meeting others who have had surgery can help you prepare and adjust.
What about my ovaries if I carry a BRCA change?
BRCA carriers also have a raised risk of ovarian cancer, which is hard to find early. Removing the ovaries and fallopian tubes is often advised once childbearing is complete, at an age guided by the gene involved. This is a separate decision with its own effects, such as early menopause.
Can I change my mind after booking surgery?
Yes. Preventive surgery is elective, so you can postpone or cancel if you feel unsure. Tell your team as early as you can. Many women take extra time, and screening can continue while you think it through.
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Talk to our team
Speak to a breast cancer specialist
Call the helpline or leave your details, and someone will help you arrange a consultation at the CION centre nearest you. One helpline serves every CION centre.
Call 1800 202 8726
Helpline open 24/7
Sources
- National Cancer Institute — Surgery to reduce the risk of breast cancer
- American Cancer Society — Preventive surgery to reduce breast cancer risk
- Cancer Research UK — Surgery to reduce breast cancer risk
This page is general information, not a prescription. Do not change or stop any treatment based on what you read here. If anything is worrying you, contact your own treating team — or call our helpline and we will help you reach the right specialist.