The role of diet and nutrition in breast cancer prevention

Breast cancer remains the most common cancer among women worldwide, but growing evidence shows that many cases can be prevented or detected early through informed lifestyle choices and regular screening.  

In this article, Mr Mohsen El Gammal, Oncoplastic Breast Surgeon at New Victoria Hospital, shares advice on the role of diet and nutrition in breast cancer prevention and the practical steps women can take to look after their breast health. 

Can diet really reduce the risk of breast cancer? 

It is understandable to look for particular foods that might prevent breast cancer. The reality is more nuanced. Be particularly cautious of products marketed online as “cancer-fighting” supplements, detoxes or hormone-balancing products. Claims about cancer prevention should be treated carefully, particularly when they are based on a single nutrient, food or small study. There is no single food to eat, supplement to take, or lifestyle change that can guarantee protection. Breast cancer develops for many different reasons, including age, genetics, family history, hormonal factors and lifestyle. 

However, there are things you can do to reduce your risk – and your everyday diet is one part of a much bigger picture. 

Research into individual foods and nutrients has produced mixed results, and there is no particular food that has been proven to prevent breast cancer. Instead, the evidence increasingly points towards overall dietary and lifestyle patterns.

For most people, the best approach is to obtain the nutrients they need through a varied, balanced diet rather than relying on high-dose vitamins, minerals or other supplements. Some supplements can be appropriate for particular medical or nutritional reasons, so speak to a healthcare professional if you think you may have a deficiency or have been advised to take one.

A diet such as the Mediterranean, rich in vegetables, fruit, wholegrains, beans and other pulses, alongside regular physical activity and a healthy body weight, is associated with a lower risk of several cancers, including breast cancer. The World Cancer Research Fund's latest evidence also supports looking at these behaviours together rather than focusing on one food or nutrient in isolation. 

This is good news because it means you do not need a perfect diet or a complicated list of so-called “superfoods”. Small, sustainable changes to the way you eat and live can be more meaningful than following a restrictive diet for a few weeks. 

Why lifestyle matters in breast cancer prevention

While genetics and family history play a role, research indicates that up to 35% of breast cancers are linked to modifiable lifestyle factors, including diet, physical activity, and body weight. Broader studies suggest that at least half of breast cancers could potentially be prevented with early and sustained lifestyle changes. 

Key dietary and lifestyle recommendations

The European Code Against Cancer and leading oncology organisations recommend: 

  • Maintain a healthy weight: A study found that women over 50 who lost 9kg or more and kept it off reduced their future breast cancer risk by 32%. 

  • Eat a plant-rich diet: Focus on whole grains, vegetables, legumes, and fruits. These foods are high in fibre and antioxidants, which help reduce inflammation and support metabolic health. 

  • Limit red and processed meats: Diets high in red and processed meats are associated with increased cancer risk. 

  • Reduce alcohol intake: Alcohol is a consistent risk factor for breast cancer. Even moderate drinking can increase risk, so limiting or avoiding alcohol is strongly advised. 

  • Stay physically active: Regular exercise helps maintain a healthy weight and reduces inflammation, both of which are protective against breast cancer. 

  • Avoid ultra-processed foods: Highly processed foods, sugary drinks, and trans fats contribute to obesity and metabolic dysfunction, which are linked to higher cancer risk. 

While no single food can prevent breast cancer, adopting a Mediterranean-style diet – rich in fibre, healthy fats, and plant-based foods – has been associated with a 40% lower risk of oestrogen receptor-negative breast cancer in postmenopausal women. 

The importance of early detection and screening 

It is important not to place the responsibility for breast cancer prevention entirely on diet, especially as some risk factors simply cannot be changed. Even with the best preventive measures, regular screening is essential. In England, the NHS Breast Screening Programme invites women aged 50 to 70 for mammography every three years; however, if you notice any changes in your breasts, such as lumps, skin changes, or nipple discharge, it's important to seek prompt evaluation regardless of your age or the screening schedule. 

At New Victoria Hospital, our One-Stop Breast Clinic offers rapid access to expert assessment, while our Mammography services provide state-of-the-art imaging for accurate diagnosis. If you have new or unusual breast symptoms, book an appointment with our Breast Consultants for a thorough assessment.

You can also self-refer for a private mammogram at New Victoria Hospital if you:

  • are aged 40 or over,
  • are not experiencing current breast symptoms, and
  • have not had a mammogram within the past year.

The mammography appointment typically takes around 30 minutes. A Breast Radiographer will explain the procedure, ask about your medical and family history, and take specialised X-ray images of both breasts.

Your results will be sent to your Consultant or GP, who can discuss them with you and advise on any next steps. If further assessment is needed, you will be referred to a specialist Breast Consultant. 

“Although no diet or lifestyle can eliminate the risk of breast cancer, making informed choices about your health and understanding your individual risk are important steps you can take. Just as importantly, knowing what is normal for your breasts and seeking advice about any changes can help ensure that concerns are assessed promptly.”
Mr Mohsen El Gammal, FRCS Ed, FEBFRCS Ed, FEBS Breast Surgery

Breast care services at New Victoria Hospital

At New Victoria Hospital, we combine diagnostics, advanced surgical techniques, and compassionate, personalised care. 

Whether you're looking to reduce your risk through lifestyle changes, need a screening mammogram, or have been diagnosed and are exploring surgical treatment options, New Victoria Hospital is here to support you with expert, compassionate care. 

  • Breast Clinic: Rapid access to specialist consultation, triple assessment (clinical exam, imaging, and biopsy), and personalised care plans.  

  • Magseed® Marker and Magtracer®: Minimally invasive, radiation-free localisation techniques for breast-conserving surgery, improving accuracy and patient comfort.  

  • Breast Reconstruction: For patients undergoing mastectomy, reconstruction options restore form and confidence after cancer treatment.

5 practical actions you can take today

You do not need to change everything at once. Start with the changes that feel realistic for your lifestyle.

  1. Review your diet: Incorporate more whole grains, vegetables, and legumes, while limiting processed foods and alcohol.
  2. Keep moving: Aim for at least 150 minutes of moderate physical activity each week, building up gradually if you are currently inactive.
  3. Know your risk: Discuss family history with a specialist and ask about genetic testing if appropriate.
  4. Seek prompt evaluation: If you're 50–70, ensure you're attending NHS screening every three years, but don’t wait for invitation if you have concerns or notice any breast changes – early detection saves lives.

For personalised advice, advanced diagnostics, or a consultation with Breast Specialists, please call 020 8949 9020 or complete our online enquiry form.

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