Log into your 23andMe account. If you previously opted to allow 23andMe and third-party researchers to use your data for research, you may withdraw consent by going to the "Preferences" section under "Account Settings," according to the company.

When you set up your 23andMe account, you’re given the option either to have your saliva sample securely destroyed or to have it stored for future testing. If you’ve previously opted to store your sample but now want to delete your 23andMe account, the company says, it will destroy the sample for you as part of the account deletion process.