Do genes affect how much people drink?
Explore the genetic variants associated with alcohol consumption.
The amount of alcohol people drink differs between populations and individuals. Part of the difference is genetic — the best-known links concern the genes that break down alcohol in the body.
What the analysis shows
DNAHelper shows which alcohol-associated variants your raw file contains and what research has linked them to. The result describes statistical associations with consumption patterns — not your tolerance or your health. The analysis is based on the traits alcohol consumption quality, alcohol drinking (2271 associated variants, strong evidence strength).
Which variants matter
ADH1B and ALDH2 are the best-known alcohol genes — they encode enzymes that break down ethanol and its toxic intermediate acetaldehyde, respectively. Variants that make breakdown less efficient lead, on average, to lower consumption.
The flushing reaction ('alcohol flush') common among many East Asians is caused by an ALDH2 variant that lets acetaldehyde accumulate. Beyond these there are hundreds of weaker signals.
What research has actually found
The links to ADH1B and ALDH2 are extremely well replicated — they are among the most robust effects in all of genetics. But the research measures consumption, not enjoyment or tolerance.
An important distinction: these variants say something about how much people drink on average — not how your body tolerates alcohol or about your personal risk.
What matters more than genes
Culture, availability, price and social norms steer alcohol consumption far more than genetics. In societies where alcohol is uncommon, few drink — regardless of genetic profile.
A genetic profile linked to higher consumption is not a prognosis — and a 'protective' profile does not mean alcohol is risk-free.
What the result means — and does not mean
The analysis is based on the traits alcohol consumption quality, alcohol drinking (strong evidence strength). Associations are statistical — they describe populations, not destinies. Read how we grade evidence in our methodology.
Privacy: your file never leaves the browser
You pick your raw file locally — it is parsed and analysed entirely in your browser and is not uploaded for the standard analysis. The only exception is the optional DNA Chat feature where you, after explicit consent, can share selected variants. Read the privacy policy · What happens to your DNA file?
Compatible raw files
Works with raw data exports from MyHeritage, 23andMe, AncestryDNA and FamilyTreeDNA (.txt, .csv, .zip). The download guides show exactly where to find the file at your provider — and the file formats are explained here.
Also read: Method & science · All analyses · All traits · Caffeine metabolism