When genetics should - and shouldn't - guide your care

Genetic testing is most useful when a result can change diagnosis, treatment, or family screening. Broad wellness or nutrigenomic reports should be interpreted more cautiously because many findings do not have established clinical actions.

Precision medicine begins with a specific question. Ordering a genetic panel is only one possible way to answer it.

When testing can be valuable

Very high LDL cholesterol with a suggestive family history may justify evaluation for familial hypercholesterolemia. Certain inherited cardiomyopathies, rhythm disorders, and aortic conditions also have established genetic pathways. Testing can help identify relatives who need assessment.

Clinical history still matters. A negative result does not exclude every inherited disorder, and a variant of uncertain significance does not establish a diagnosis.

When a report needs restraint

Common variants associated with nutrient handling, metabolism, or inflammation often describe susceptibility, not a present deficiency or disease. A genetic association should not automatically become a supplement prescription.

Polygenic risk scores combine many variants, but their predictive performance and usefulness vary. They should be considered alongside clinical information rather than treated as a complete forecast.

Ask what would change

Before testing, ask: What decision are we trying to make? What happens if the result is positive, negative, or uncertain? Would confirmation or genetic counseling be needed? Are there implications for my relatives?

The prevention plan should remain grounded in your measured health, symptoms, and established risk factors. Genetics can add context, but it should not postpone treatment of a clear abnormality or create unwarranted certainty about your future.