What can you do with your raw DNA data? 9 ideas worth your time
You took a DNA test for a pie chart of where your ancestors came from. Behind that pie chart sits a plain text file with more than half a million of your genetic letters, and the pie chart used a sliver of it.
The rest is quietly sitting in your downloads folder. It knows whether milk agrees with you, how fast your liver clears coffee, whether you lean toward sprinting or long runs, and which vitamins are worth a blood test. Here is what you can actually do with it, from the useful to the fun, and the few things to skip.
What is raw DNA data?
It is the file your testing company keeps behind your results. Download it from 23andMe, AncestryDNA, MyHeritage or FamilyTreeDNA and you get a zip with one text table inside, one line per marker:
rsid chromosome position genotype
rs762551 15 75041917 AC
Each line is a marker's public name, where it sits, and your two letters, one from each parent. That example line is real: rs762551 is in CYP1A2, the gene behind how fast you clear caffeine. One line down, about 600,000 to go. More on the format in 23andMe raw data explained.
9 things you can do with your raw DNA data
1. See what your genes say about food, sleep and training
This is where the file earns its keep. A few of the things it can tell you:
| What you'll learn | The gene | Read more |
|---|---|---|
| Whether milk still sits well as an adult | LCT | Lactose tolerance |
| How fast you clear caffeine | CYP1A2 | The caffeine gene |
| Whether you lean early bird or night owl | Several | Chronotype genes |
| Power or endurance muscle | ACTN3 | The sprinter gene |
| How well you turn plant omega-3 into EPA and DHA | FADS1 | Omega-3 conversion |
| Why broccoli tastes bitter to some people | TAS2R38 | Supertasters |
| Why one drink turns some faces red | ALDH2 | Alcohol flush |
Every one of these is a lean, not a verdict. The useful ones are the leans you can test against your own life in a week or two.
2. Talk it through with your own AI
Here is the most underrated use of all. A chat can't read 600,000 raw lines reliably, and pasting them in goes wrong in specific ways. But your AI is brilliant at turning a finished, sourced report into a plan for your actual week.
Your DNA in your own AI
Helisoma reads it in your browser, so the raw file never leaves your device, and links every finding to its study.
ChatGPT and Claude read the report over a live link; Gemini and Whoop Coach take it as a PDF.
The answers come from your genotypes and the studies behind them, not from the model's memory.
Add your blood test results or your sleep data later, and the advice updates with them.
3. Plan vitamins and supplements with real numbers
Your genes can't tell you what to take. They can tell you what is worth measuring. Common versions of a few genes go with lower blood levels or weaker conversion:
- Vitamin D: versions of GC and CYP2R1 go with lower blood levels. More here.
- Vitamin B12: FUT2 and a few other genes nudge B12 levels, and some versions can make the standard blood test read low.
- Omega-3: FADS1 and FADS2 versions decide how well you turn plant omega-3 from flax or walnuts into EPA and DHA, the forms in fish.
- Vitamin A: BCO1 versions set how well you turn beta-carotene from carrots into vitamin A.
The rule that keeps you safe and saves money: genes tell you what to test, the blood test tells you the dose. More in which vitamins you actually need. Then ask your AI to build a plan around your actual lab numbers, and check it with your doctor before you start anything new.
4. Build a smarter yearly blood test list
Most checkups run the same standard panel for everyone. Your file can add the few tests that make sense for you. In the Helisoma app, the Lab tests page lists the tests medical guidelines recommend for your age and sex, then adds the ones your DNA points to, each with a note on why. Take the list to your next appointment. Not sure where to start? Here are the blood tests worth getting in your 30s.
5. Fix your coffee and sleep timing
Your chronotype genes hint at when your body wants to sleep. Your caffeine genes hint at how long a coffee lingers and how jittery it makes you. Put them together and you have a hypothesis about your ideal last-coffee time. Then test it: two weeks with your last cup before noon, two weeks with a 3 p.m. cup, and compare your nights. The caffeine article explains why dose and timing beat the gene.
6. Train for the body you have
Muscle fiber type (ACTN3), how much your aerobic capacity responds to endurance work, and collagen genes linked to tendon resilience all hint at what may come naturally and where to build in more recovery. None of them picks your sport. All of them make a better training conversation with a coach or your AI.
7. Put your DNA, wearable and lab data in one chat
Your genes are the one thing that never changes; your sleep score, heart rate and blood tests change every day. Put them side by side and each makes the other more useful. Whoop Coach can read your report next to your recovery data, and ChatGPT and Claude can read it next to your Apple Health or Strava data. We wrote a whole piece on it: build your health team inside your own AI.
8. Find relatives and go deeper on ancestry
Most genealogy sites accept raw files for free, and each has its own database of people, so the same file can surface new matches. GEDmatch and FamilyTreeDNA both take uploads for free. MyHeritage stopped accepting files from other companies in 2025. Our comparison of DNA upload sites has the details, including which ones let police search their database.
9. Look up a marker yourself
For a weekend of curiosity, search your file for any rs number and read about it on public databases like dbSNP. It is genuinely doable, with three traps to know:
- Strand flips. Papers and files can describe opposite DNA strands, so A/G in a paper may be T/C in your file. Same result, mirrored.
- Builds. Position numbers depend on the reference genome version, so match on the rs number, not the position.
- Rare variants. When researchers checked chip calls against real sequencing, more than 8 in 10 calls of very rare variants were wrong. A scary rare finding is usually a chip error. Here's why.
What raw DNA data can and can't tell you
| It can | It can't |
|---|---|
| Show common leans on food, caffeine, sleep and training | Diagnose a disease or rule one out |
| Point to vitamins worth a blood test | Tell you the right dose of anything |
| Find relatives on genealogy sites | Read rare variants reliably |
| Give your AI something true to work with | Replace a clinical genetic test |
What not to do with your raw DNA data
- Don't paste it into a chatbot. It answers from memory and the file ends up on someone else's servers. Why.
- Don't act on a scary rare variant. Confirm it with a clinical test first; the chip is often wrong about rare ones.
- Don't change medication because of it. Prescriptions are a conversation with whoever writes them, backed by a clinical test.
How do I keep my raw DNA file safe?
Treat it like a password. Keep the original zip somewhere private, delete stray copies from your downloads and email, and prefer tools that read the file without keeping it. Helisoma reads it in your browser and sends only the few hundred markers the report needs, well under a megabyte. Leaving 23andMe? Download your file before you delete.
Quick answers
Is it worth downloading my raw DNA data?
Yes. It's free, takes a few minutes to request, and it's the only way to use your results anywhere other than the company that tested you. Here's how for each test.
Is raw DNA data accurate?
For common variants, very: in a study of nearly 50,000 people, chips agreed with full sequencing more than 99% of the time. For very rare variants, often not, which is why rare findings need a clinical test. The details.
Can I analyze my raw DNA data for free?
Yes. Many sites have free tiers, and Helisoma shows your first findings free in about a minute, with no account. The full report is $49 once.
Sources
- Weedon MN, Jackson L, Harrison JW, et al. Use of SNP chips to detect rare pathogenic variants: retrospective, population based diagnostic evaluation. BMJ, 2021. PubMed 33589468
