Dr. Google has always been a bit of a quack, doling out ever shoddier medical advice with every passing search result. Search the symptoms of a rash and somehow, someway, you will inevitably come to believe you have cancer. Now, the search engine is trying to bring some much-needed validity to the world of health-related searches with a new database of 400 commonly searched medical conditions that have been extensively fact-checked by doctors at the Mayo Clinic. Google announced the news in a blog post Tuesday, saying that it will now surface these pre-vetted facts at the top of its search results, in hopes of getting people to the right information faster.