General health websites were in high demand among those who visited a health-related site over the previous six months, viewed by 59% of them.
More than one out of five internet users named the internet as their most trusted source of medical information.
The most time spent online by US physicians was for so-called Health Care Providers content.
For information, news, tools and, increasingly, patient health records, a considerable 81% of US physicians went to sites targeted to health care professionals in Q1 2012.
The internet has become an integral part of clinical practice, allowing physicians to stay up to date on healthcare treatments, medications and payer guidelines.
Across 18 different categories, postal mail is preferred in 15.
Only 26% of social network users followed alcoholic beverage brands because they wanted discounts or coupons.