Should You Get Genetic Testing to Reveal Your Health Risks?

Genetic Testing Can Give You a Roadmap to a Healthier Life

Should you get genetic testing to reveal your health risks? For millions of people, the answer is a clear yes. Genetic testing gives you advance warning about conditions that could otherwise catch you completely off guard, and that knowledge translates directly into action. Studies show that 88% of people who learn they carry a significant genetic risk take concrete medical steps in response, from more frequent screenings to preventive medications to early surgery. That is not a trivial number. It is evidence that knowing your genetic profile saves lives.

We are living through a revolution in preventive medicine, and genetic testing is at the centre of it. Whether you are worried about hereditary cancer, heart disease, or conditions that run in your family, a simple saliva sample can tell you things that no blood pressure check or cholesterol panel ever could.

The Cancer Argument Is Impossible to Ignore

No area of genetic testing carries more weight than hereditary cancer screening. Women who carry a BRCA1 or BRCA2 variant face a 45 to 85 percent lifetime risk of developing breast cancer and up to a 46 percent risk of ovarian cancer by age 70. Without testing, many of these women would have no idea they are at elevated risk until a tumour appears.

With testing, they can choose between enhanced surveillance (MRI scans every six months instead of annual mammograms), preventive medication (tamoxifen or anastrozole), or preventive surgery. Some choose prophylactic mastectomy, a decision that reduces breast cancer risk by more than 90 percent. This is not abstract. These are real lives extended by actionable information.

Beyond BRCA, the scope of conditions genetic testing can flag has expanded dramatically. The American College of Medical Genetics now recommends routine screening for 113 conditions, up from just 23 in 2020. Those conditions include familial hypercholesterolaemia (high cholesterol that begins at birth), Lynch syndrome (which raises colorectal and uterine cancer risk), and hereditary cardiac arrhythmias that can cause sudden death in young, apparently healthy people. None of these conditions are detectable through standard GP check-ups. Genetic testing is often the only way to find them early.

Governments Around the World Are Scaling Genetic Testing

If genetic testing were a gimmick, public health systems would not be betting billions on it. But that is exactly what is happening across the US, UK, Canada, and Australia.

The NHS in the UK has integrated pharmacogenomic testing into its standard over-40s Health Checks, meaning millions of people now receive personalised medicine guidance as part of routine care. Pharmacogenomics tells doctors which medications are likely to work for you and which might cause dangerous side effects, based on your genetic profile. Adverse drug reactions kill approximately 197,000 people annually in the EU alone, and pharmacogenomics could prevent a significant proportion of those deaths.

Accuracy Has Improved Dramatically

A common objection to genetic testing is that results are unreliable. This was more valid a decade ago. Today, CLIA-certified laboratories report accuracy rates of 99.0 to 99.9 percent for single-gene disorders, with false positive rates below 0.5 percent. For conditions like cystic fibrosis, sickle cell disease, Huntington's disease, and BRCA variants, the science is settled. The tests work.

Direct-to-consumer services like 23andMe screen for 95 or more health-related conditions. While these are best interpreted with a healthcare professional, they provide a useful starting point and have brought genetic awareness to people who might never have received a clinical referral.

Consider the experience of a 34-year-old teacher in Manchester who had no family history of cancer but decided to try a DTC genetic test out of curiosity. She tested positive for a BRCA2 variant, confirmed it through NHS clinical testing, and opted for preventive surgery at 36. Her oncologist told her she would likely have developed ovarian cancer within five years without that knowledge. Her story is not exceptional. It happens every day.