Google and Facebook collect information about users' bad habits.

Research from JAMA Network Open found that many apps for combating depression and addiction

habitually transfer confidential user information to third-party companies.

What is known

It turned out that 33 out of 36 free applications forfight against smoking and depression transmit data to Facebook and Google. 29 of 36 apps shared data for advertising, marketing or analytics purposes. Users in such add-ons can provide information about their mental health or substance abuse problems.

In addition, companies received namesusers who are trying to get rid of various dependencies. This situation is more proof that personal information about your health should be trusted only to professionals, and not to mobile applications and all questionnaires.