The Ultimate Cancer Prevention Checklist — How Many Are You Missing?

Cancer is one of the leading causes of death in the UK and worldwide, but significant evidence shows that many cancers can be prevented through targeted lifestyle changes, regular screening, and early detection. In fact, it is estimated that more than 40% of all cancer cases could be avoided through risk-reducing behaviours and preventative strategies (World Cancer Research Fund, 2018).

We've put together the ultimate checklist for you... how many are you missing?

1. Understand Your Genetic Risk

A substantial portion of cancer risk is inherited. For many people, this genetic risk goes undetected until a diagnosis occurs within the family. Knowing your genetic predisposition can influence how and when you engage in screening and lifestyle modification.

Action:

• Undertake a polygenic risk score (PRS) test to assess your inherited susceptibility to cancers such as prostate and breast cancer.

• Discuss family history and test results with your GP or specialist to build a personalised prevention plan.

Vitall offers the UK’s only at-home polygenic saliva test for prostate cancer risk, and a comprehensive breast cancer genetic risk and prevention plan.

Supporting evidence:
Eeles et al. (2024) demonstrated that PRS testing via saliva samples identified aggressive prostate cancers more accurately than PSA or MRI testing in a population-based study.

2. Participate in Regular and Early Screening

Early detection of cancer dramatically increases the chances of successful treatment. However, many cancers are not screened for routinely, or screening begins too late for high-risk individuals.

Action:

• Begin screening for prostate cancer earlier if you are at increased genetic risk or have a family history.

• For breast cancer, consider genetic screening if under 50, as 20% of breast cancer cases in the UK occur in women younger than the NHS screening age of 50 (Cancer Research UK, 2023).

• Do not skip cervical, bowel, or skin cancer checks.

Supporting evidence:
Early-stage breast cancer has a 5-year survival rate exceeding 98% compared to 26% when diagnosed at Stage 4 (Office for National Statistics, 2023).

3. Maintain a Healthy Weight

Obesity is a leading modifiable risk factor for cancer, associated with at least 13 different cancer types, including breast, colorectal, endometrial, oesophageal, kidney, and pancreatic cancers.

Action:

• Maintain a BMI within the 18.5–24.9 range.

• Engage in at least 150 minutes of moderate-intensity activity per week.

Supporting evidence:
The International Agency for Research on Cancer has confirmed the link between excess body fat and increased risk of numerous cancers.

4. Improve Your Diet Quality

Up to one-third of cancer cases are influenced by diet. A poor-quality diet can increase cancer risk, particularly when high in processed meats, alcohol, added sugars, and low in fibre or micronutrients.

Action:

• Eat at least five portions of fruit and vegetables daily.

• Prioritise whole grains, legumes, nuts, and oily fish.

• Avoid processed meats, charred meats, and limit red meat intake.

• Limit alcohol to below 14 units per week for men and women, as per NHS guidance.

Supporting evidence:
The World Cancer Research Fund reports that dietary factors are strongly linked to cancer incidence, especially for colorectal cancer.

5. Avoid Tobacco Use and Second-Hand Smoke

Tobacco use remains the single largest preventable cause of cancer. It is associated with at least 15 different cancer types.

Action:

• If you smoke, seek support to quit completely.

• Avoid exposure to second-hand smoke in public or home settings.

Supporting evidence:
Smoking is responsible for 70% of lung cancer cases and significantly increases risk of mouth, oesophagus, bladder, and pancreatic cancers (Peto et al., 2018).

6. Reduce Environmental Carcinogen Exposure

Environmental factors can act as cancer triggers, especially when combined with genetic susceptibility.

Action:

• Avoid exposure to known carcinogens such as benzene, asbestos, radon, and certain pesticides.

• Use non-toxic household products where possible.

• Filter your drinking water, especially in areas with high contaminant levels.

Supporting evidence:
The IARC classifies more than 100 agents as carcinogenic to humans, including common occupational and household substances.

7. Manage Hormone Health

Disruptions in hormone levels, particularly oestrogen and testosterone, are linked to hormone-sensitive cancers such as breast, ovarian, and prostate.

Action:

• Test your hormone levels periodically, especially if experiencing symptoms of imbalance.

• Minimise exposure to endocrine-disrupting chemicals (EDCs) such as BPA, phthalates, and parabens.

• Maintain a stable weight and avoid excessive alcohol intake.

Supporting evidence:
Long-term exposure to elevated oestrogen has been linked to increased risk of post-menopausal breast cancer (Key et al., 2001).

8. Optimise Gut and Immune Health

A healthy gut microbiome plays a crucial role in immune regulation and may influence cancer risk through inflammatory and metabolic pathways.

Action:

• Eat a fibre-rich, plant-based diet to support microbial diversity.

• Include fermented foods and prebiotics.

• Avoid unnecessary antibiotic use.

• Consider a gut microbiome test if experiencing chronic digestive issues.

Supporting evidence:
Disruptions in the microbiome have been associated with colorectal cancer development (Garrett, 2015).

Download our FREE complete guide to Gut Health and Immunity here.

9. Reduce Chronic Stress and Prioritise Sleep

Chronic stress and poor-quality sleep can impair immune function, alter hormone levels, and increase inflammation, all of which may contribute to cancer development.

Action:

• Prioritise 7–9 hours of high-quality sleep.

• Use stress management techniques such as exercise, meditation, therapy, or nature exposure.

• Limit screen time and caffeine in the evening.

Supporting evidence:
Poor sleep is linked to elevated levels of inflammatory markers and altered immune surveillance (Irwin, 2015).

10. Use Testing to Guide Proactive Prevention

Testing allows for personalisation, helping individuals avoid guesswork and take meaningful steps based on their actual biology.

Action:

• Choose home test kits that measure cancer-related biomarkers, hormone levels, and genetic risk.

• Follow up test results with tailored actions: screening, diet changes, clinical review.

Vitall offers a full suite of lab-grade home health tests, including hormone panels, gut microbiome analysis, vitamin and mineral tests, and most importantly, their Prostate Cancer and Breast Cancer Risk Home Test Kits, designed for early detection and personalised prevention.

Final Thoughts

Cancer prevention is not about fear. It is about building the awareness and habits that allow you to take control of your health before symptoms appear.

The more you understand your personal risk factors—genetic, environmental, hormonal, and behavioural—the more powerfully you can act to reduce them.