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Evidence-led cancer prevention guide

Reducing Cancer Risk: Practical Steps That Matter

Cancer is not always preventable, and it can affect people who follow healthy lifestyles. Evidence-based choices and support can still reduce the risk of some cancers and improve health more broadly.

Read official NHS cancer guidance (external link, opens in a new tab)Read Our Guide
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Quick guide

Reducing Cancer Risk at a Glance

What risk reduction means
Actions can lower the chance of some cancers. They cannot prevent every cancer.
Tobacco
If you smoke, stopping is an important step. NHS stop-smoking support can make quitting more achievable.
Alcohol
Drinking less reduces alcohol-related health risk. NHS guidance describes 14 units a week as low risk, not safe.
Everyday health
A balanced diet, movement that suits you and support to maintain a healthy weight can contribute to lower risk.
Protection
Avoid sunburn, follow workplace safety controls, and have HPV or hepatitis B vaccination if offered.
Screening and symptoms
Attend appropriate NHS screening when invited, but never wait for screening if you have symptoms.

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2. Risk Reduction, Not a Guarantee

Risk describes chance across groups, not a prediction for one person. Age, genes, infections, environment, chance and health behaviours can all play a part. Some factors cannot be changed.

This guide focuses on England and general adult advice. Ask a healthcare professional for support that reflects your health, disability, pregnancy, medicines and circumstances.

3. Tobacco and Stop-Smoking Support

Smoking increases the risk of several cancers. Stopping reduces risk over time, and it is worth getting support at any age. Dependence is not a lack of willpower: nicotine is addictive, and evidence-based support can help.

NHS stop-smoking services can advise on medicines, nicotine-replacement products and behavioural support. People who use shisha, bidis or paan with tobacco are also exposed to tobacco-related harm.

Find NHS stop-smoking information and support (external link, opens in a new tab)

4. Alcohol

Alcohol is linked with several cancers. NHS advice says that, if you drink most weeks, keeping below 14 units a week, spreading drinking over three or more days and having drink-free days can keep health risks lower.

The NHS describes this as low-risk rather than safe drinking because no level is risk-free. Cutting down is worthwhile, and people who are dependent on alcohol should seek medical advice before stopping suddenly.

5. Food, Weight and Physical Activity

A balanced pattern of eating supports overall health. NHS guidance recommends a variety of fruit and vegetables, higher-fibre foods, beans and pulses, and less red and processed meat. No single food prevents cancer.

Maintaining a healthy weight can reduce the risk of some cancers, but weight is influenced by health, medicines, income, environment and access—not simply personal choice. Support should be practical and non-stigmatising.

Adults are generally advised to aim for at least 150 minutes of moderate activity or 75 minutes of vigorous activity a week, with strengthening activity on two days. Any activity should be appropriate for your health and ability; smaller amounts and accessible movement still count.

6. UV and Sun Safety

Sunburn increases skin-cancer risk and can happen in the UK. NHS advice includes using shade, covering skin, avoiding burning and using at least SPF 30 with suitable UVA protection. Sunscreen should not be the only protection.

People of every skin tone can develop skin cancer. Check moles and skin for new or changing areas and contact a GP about a concerning change.

Read current NHS sun-safety guidance (external link, opens in a new tab)

7. Vaccination and Infection Prevention

Some infections can increase cancer risk. The NHS offers HPV vaccination to eligible groups and hepatitis B vaccination to people at higher risk. Eligibility can change, so use current NHS guidance.

The HPV Vaccination guide explains the current England programme, and the HPV Test guide explains cervical-screening results. Vaccination does not replace cervical screening for eligible people.

8. Screening and Early Detection

NHS screening can identify risk markers, cell changes or cancer earlier in eligible people without symptoms. Screening has benefits and limitations and does not cover every cancer.

Use the Cancer Prevention & Screening Information Library to understand bowel, cervical, breast and lung programmes. If you have a concerning change, use the Cancer Symptoms guide and contact your GP instead of waiting for screening.

9. Workplace and Environmental Exposures

Some workplace or environmental exposures, including asbestos and excessive UV, can increase cancer risk. Follow employer risk controls, training and protective-equipment requirements. Raise concerns with your employer, union, occupational-health service or the relevant regulator.

Do not disturb material that may contain asbestos. Seek qualified advice before renovation or removal.

10. Common Myths

“A healthy lifestyle prevents all cancer.”

No. It can lower the risk of some cancers but cannot guarantee protection.

“One superfood or supplement prevents cancer.”

No single food or supplement provides that protection. Follow balanced-diet guidance and ask a professional before using supplements.

“Screening means I do not need to notice symptoms.”

No. Screening is generally for people without symptoms and does not find every cancer.

11. Frequently Asked Questions

Can cancer always be prevented?
No. Anyone can develop cancer, and it is not always clear what caused it. Evidence-based actions can reduce the risk of some cancers but cannot guarantee protection.
What is the most useful first step?
The right starting point depends on you. If you smoke, NHS stop-smoking support can help. Other practical options include drinking less alcohol, moving more, eating a balanced diet and protecting skin from UV.
Is there a safe amount of alcohol?
NHS guidance describes 14 units a week as a low-risk limit, not a safe level. Drinking less reduces alcohol-related health risk.
Do supplements prevent cancer?
Do not rely on supplements as a substitute for a balanced diet or medical care. Ask a pharmacist, GP or dietitian before taking supplements if you have a health condition, use medicines or are unsure.
Does screening prevent cancer?
Screening and prevention are related but different. Some screening can find changes before cancer develops, while other screening aims to find cancer earlier. No screening test prevents or detects every cancer.
What if healthy changes feel unaffordable or inaccessible?
Small changes can still matter, and support should respect cost, disability, culture and local access. NHS Better Health, your GP surgery and local services may offer practical support.

12. Evidence and References

These current NHS sources support the practical advice in this guide. No unsupported percentage of preventable cancers is used.

13. Official NHS Resources

14. How BloomShield Helps

Clear information is one part of equitable access. BloomShield’s connected programmes support understanding, practical access and navigation across screening and care pathways.

ScreenAccess™

identifies and helps address practical, social and service barriers to screening access.

ScreenConnect™

supports navigation, coordination and continuity across screening and care pathways.

Work with BloomShield to improve screening access