1 — What it is
Family medical history is a record of the significant health conditions, causes of death and genetic traits that appear across your biological relatives — typically parents, grandparents, siblings, aunts and uncles.
Doctors use this information to assess your personal risk for hereditary conditions such as heart disease, cancer, diabetes and certain mental health disorders.
A documented family history enables targeted screening, earlier diagnosis and preventive action before symptoms appear.
2 — Why it matters
- Hereditary risk factors go undetected without a documented family history
- Missed opportunity for preventive screening that could catch cancer or heart disease early
- Doctors unable to recommend genetic counselling when indicated
- Incorrect risk assessment for life and health insurance applications
- Children and grandchildren deprived of critical health intelligence
- Increased chance of late-stage diagnosis for conditions that run in the family
3 — When to apply it
- During a family gathering while older relatives can still provide information
- After a relative is diagnosed with a serious or hereditary condition
- Before a first appointment with a new specialist or GP
- When planning a pregnancy
- When children reach adulthood and need to know their risk profile
4 — Procedure
- 1Identify three generations: you, your parents, and your grandparents on both sides. Include siblings, aunts and uncles.
- 2For each relative, record: name, date of birth, major illnesses, age at diagnosis, cause and age of death if applicable.
- 3Focus on: heart disease, stroke, diabetes, cancer (type and age), mental illness, neurological conditions, autoimmune diseases.
- 4Interview older relatives in person or by phone — they hold information that cannot be found in documents.
- 5Request death certificates or medical records for deceased relatives where possible.
- 6Organise the data in a simple table or family tree diagram.
- 7Share the completed document with your GP and store it alongside your personal medical records.
- 8Update the record whenever a relative receives a new significant diagnosis.
5 — Checklist
- Identified all first- and second-degree biological relatives
- Recorded health conditions and causes of death for each relative
- Noted age at diagnosis for all significant conditions
- Interviewed at least one older relative from each side of the family
- Created a written or digital family health tree
- Shared the document with your GP
- Stored a copy in encrypted long-term storage
- Planned when to share it with adult children
6 — Documents involved
- Family health history table or tree
- Death certificates of parents and grandparents
- Genetic test results (if available)
- GP letter summarising known hereditary risks
- Specialist letters mentioning familial predisposition