Resources · Guide
What is in your genetic file
A text file with hundreds of thousands of positions
A “raw” genetic file is a list of positions in the genome (identified by their rsID) and the two letters you carry at each. It is not a report or an interpretation: it is the data.
The three most common formats
- 23andMe (.txt): rsID, chromosome, position and genotype columns.
- AncestryDNA (.txt): similar, with the two alleles in separate columns.
- VCF (.vcf): the standard research format, with a header and one row per variant; it is what sequencing and many laboratories produce.
# rsid chromosome position genotype
rs762551 15 74749576 AC
rs174537 11 61552680 GTWhat a file does not tell you
Most positions have no useful interpretation for nutrition. A chip file does not cover every variant of nutritional interest, and known associations are probabilistic. Nor can the file diagnose anything: for that there are medical tests, ordered by a doctor.
What you can do with it
Learn to read it, ask an AI assistant with judgement (next guide), or take it to a professional. If you have no file and want a study aimed at nutrition, the NutriGPT study is carried out through your dietitian. Find a professional →