From 2009 to 2011,increases were famous in the proportion of adults aged greater than or equal to 18 years who used the Internet to fill a prescription (5.9% to 7.1%), schedule an appointment with a health-care provider (2.6% to 4.5%), and communicate with a health-care provider by e-mail (4.6% to 5.5%). The use of online chat groups to memorize about health topics also increased (3.3% to 3.7%). The percentage of adults who looked up health information on the Internet did not change significantly from 2009 (45.5%) to 2011 (46.5%),but in both years, looking up health information on the Internet was seven to 14 times as likely to occur as each of the other four activities.
Source: cdc.gov