67% of people who surf the Web conduct health-related research online, according to BURST! Media. 20% of respondents said they had clicked on an online ad for a prescription drug or over-the-counter remedy. Women are far more likely than men to conduct health research online. On average, 73.9% of women will research health topics online, compared to just 62.1% of men. 80% of women ages 25-44 said they researched health issues online. At just 38.2%, males 18 years and younger are least likely to seek health info online.