Elaine Ou Bloomberg

Ad networks like Google and Facebook track users all over the internet with cookies and device identifiers. Such tech companies know things that a person would never admit to a doctor. Read here to know more.

Millions of Americans are searching for health-related issues on the Web. One in 20 Google searches are for health-related information.

Ad networks like Google and Facebook track users all over the internet with cookies and device identifiers. Such tech companies know things that a person would never admit to a doctor. Read here to know more.

Millions of Americans are searching for health-related issues on the Web. One in 20 Google searches are for health-related information.