# 23andMe Offers Genetic Test for Weight-Loss Drug Efficacy and Side Effects

- slug: 23andme-offers-genetic-test-for-weight-loss-drug-efficacy-and-side-effects
- date: 2026-04-08
- category: Biotech & Life Sciences

23andMe found two genetic markers that predict GLP-1 weight-loss efficacy and side effects. Now it is returning those results to patients before they ever fill a prescription — before the field has agreed on whether it should.

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