Some amusing (and intermittently troubling) stuff about Google and health-related search in a press release from a medicine-related public interest group:
To determine what patients typically see when searching for information on prescription medications, CMPI took a snapshot of the first three pages of Google search results for a commonly-used cholesterol treatment and a type-2 diabetes drug. CMPI also looked at the real world consequences of what happens when decisions are based on incomplete, false or misleading information. Using SSRIs and vaccines as examples, CMPI found that basing decisions solely on online hysteria and fear could lead to a public health crisis or even death.
More alarmism here, including charts like the following unsurprising one: