Family Medical History Chart: How to Build One
A family medical history chart is a simple record of the major illnesses in your blood relatives, across three generations, along with the age each problem started. Doctors use it to judge your risk of heart disease, diabetes, some cancers and inherited blood disorders, and to decide when you should start screening. You can build one in an evening with a notebook, a phone call to your parents, and the template below.
Step 1: Map your family and fill the template
Most of us know "Nanaji had sugar" or "Dadi had some heart problem". A chart turns that vague memory into something a doctor can act on. Start with the people, then add the health details.
Who goes on the chart
Your chart should cover first-degree relatives (parents, siblings, children) and second-degree relatives (grandparents, aunts, uncles, half-siblings). First-degree relatives matter most, because you share about half their genes. Cousins are useful extras if a pattern, such as early heart attacks, keeps repeating.
The family health history template
Copy-paste template Name | Relation | Born (year) | Conditions | Age at diagnosis | Alive? / Cause and age at death | Lifestyle notes Ramesh | Father | 1956 | Type 2 diabetes, hypertension | 48, 52 | Alive | Ex-smoker Sunita | Mother | 1960 | Hypothyroidism | 41 | Alive | Vegetarian Harbans | Paternal grandfather | 1928 | Heart attack | 54 | Died at 54, heart attack | Smoker |
Draw a genogram if you like visuals
A genogram is a family tree with health symbols: squares for males, circles for females, shading for affected relatives. Genetic counsellors use them (the CDC's family health history guide shows the basics), but a neat table works just as well for most families. Pick whichever format you'll actually keep updated. Either way, a family medical history chart in a shared family folder beats one hidden in a single person's diary.
Step 2: The hereditary diseases in India to ask about
In Indian families, a handful of conditions show up again and again. Ask specifically about each one, because elders often don't mention illnesses they consider "normal for age".
The ten conditions to ask about
Condition | Why it matters for you | Red-flag pattern | Screening it can trigger |
Type 2 diabetes | Indians develop it earlier and at lower body weights | Parent diagnosed before 50 | Fasting sugar and HbA1c from 25 to 30 |
Heart disease | Early heart attacks run in families | Father or brother before 55, mother or sister before 65 | Lipid profile, ECG, earlier cardiology review |
High blood pressure | Strongly familial | Both parents affected | Yearly BP checks from your 20s |
Thalassemia trait | About 3 to 4% of Indians carry beta-thalassemia | Relative with thalassemia or "low Hb all life" | HbA2 / HPLC test, especially before marriage |
Sickle cell trait | Common in tribal communities and central India | Known carrier in family | Sickle cell test and genetic counselling |
Breast or ovarian cancer | Some families carry BRCA gene changes | Two or more relatives, or diagnosis before 50 | Earlier mammography, genetic counselling |
Colon cancer | Familial risk is real | Relative diagnosed before 50 | Earlier colonoscopy |
Thyroid disorders | Very common in Indian women | Mother or sisters affected | TSH test |
Kidney disease | Linked to diabetes and BP, sometimes inherited | Relative on dialysis | Creatinine, urine albumin |
Mental health conditions | Depression and bipolar disorder have family links | Relative treated or hospitalised | Early conversation with a doctor |
Write down carrier status, too
The National Sickle Cell Anaemia Elimination Mission had screened over 7 crore people by mid-2026, with more than 20 lakh carriers identified. If your family is from a high-prevalence region, write down any known sickle cell or thalassemia status on the chart.
In simple terms: Some illnesses run in families, like diabetes, heart disease and certain blood disorders. If you know which relatives had them, and how young they were, your doctor can test you earlier. Earlier tests mean problems get caught when they are easier to treat. |
Step 3: Questions to ask parents about health history
Health talk can feel uncomfortable, especially with elders. Make it part of a family conversation, not an interview. Your family medical history chart will be more accurate if several relatives add what they remember. Festivals and family weddings are good moments, when relatives from both sides are together.
Easy conversation starters
• "Dadi, what did Dadaji's doctor say his heart problem was?"
• "How old were you when the sugar started?"
• "Did anyone in your family have problems with blood, like needing transfusions?"
• "Did any relative have cancer? Do you know which type?"
• "Was anyone treated for depression or 'nerves'?"
Fill the gaps with real records
Memories are often wrong about ages and diagnoses. Where possible, check old discharge summaries, prescriptions and lab reports. If a parent's file is still at a hospital, our guide shows how to get medical records from hospital using a simple written request. The discharge summary usually names the exact diagnosis.
Keep the chart alive
Update the family medical history chart whenever someone gets a new diagnosis. Share it with your doctor at your annual checkup. If a relative's diagnosis was never clear, getting a second medical opinion in India can confirm it, and the confirmed answer belongs on your chart.
Seht tip Store your family medical history chart as a document in each family member's Seht profile. When your child grows up and sees a doctor alone, the history goes with them. |
When to see a doctor
Your chart is a planning tool. Book an appointment with your family physician if:
A parent or sibling had a heart attack or stroke before 55 (men) or 65 (women)
Two or more close relatives had the same cancer, or any cancer before 50
A relative has thalassemia, sickle cell disease or haemophilia, and you plan to have children
Several relatives developed diabetes before 50
You notice symptoms linked to a family condition, such as chest pain, unusual thirst or a breast lump
A relative died suddenly and young without a clear cause
If someone has chest pain, sudden weakness or trouble breathing, call 112 or 108 immediately.
FAQs
What should a family medical history chart include?
Include three generations of blood relatives: grandparents, parents, siblings and children, plus aunts and uncles if possible. For each person, note major conditions, the age they were diagnosed, current status, and the cause and age of death if they have died. Add lifestyle notes like smoking. Ages are especially important, because early onset signals higher risk.
Why do doctors ask about family medical history?
Many conditions, including heart disease, diabetes, some cancers and blood disorders like thalassemia, run in families. Knowing which relatives were affected, and how young they were, helps a doctor estimate your risk and decide when to start screening. A strong family history can mean tests years earlier than standard guidelines suggest.
How far back should a family medical history chart go?
Three generations is the standard: your grandparents, your parents and their siblings, you and your siblings, and your children. Going further rarely adds useful detail, because older diagnoses are often uncertain. First-degree relatives, meaning parents, siblings and children, carry the most weight, so get their details as accurate as possible.
What if I don't know my family's health history?
Start with what you can confirm. Ask parents, aunts and older cousins, and check old prescriptions or discharge summaries. If you were adopted or relatives are unreachable, tell your doctor. They may suggest routine screening a little earlier, or specific tests like a lipid profile or HbA1c, to make up for the missing information.
Is there a free family health history template I can use?
Yes. A simple table with columns for name, relation, birth year, conditions, age at diagnosis, status and lifestyle notes works well. Copy the template in this guide into a notebook, spreadsheet or your Seht app. The US CDC's "My Family Health Portrait" tool is another free option you can adapt.
Download Seht — free on iOS and Android
Seht keeps it next to each person's reports, prescriptions and appointments, so the whole family's health story lives in one place, and you can share it with a new doctor in seconds.
Download free:
Sources and references
Indian Council of Medical Research – India Diabetes (ICMR-INDIAB) study. The Lancet Diabetes & Endocrinology, 2023. https://www.icmr.gov.in
Ministry of Health and Family Welfare. National Sickle Cell Anaemia Elimination Mission – progress update, June 2026. https://sickle.nhm.gov.in
Centers for Disease Control and Prevention. Family Health History: the basics. https://www.cdc.gov/genomics-and-health/family-health-history
Colah R, Italia K, Gorakshakar A. Burden of thalassemia in India. Indian Journal of Medical Research. https://pubmed.ncbi.nlm.nih.gov
World Health Organization. Cardiovascular diseases fact sheet. https://www.who.int
Disclaimer: This blog is for informational purposes only and is not medical advice. Seht helps families stay informed, but is not a substitute for professional healthcare guidance.
