Thousands of hits does you no good when searching for medical information. So keep these in mind:
If you are using Google, take advantage of the advance search options and tricks. For example, if you want to limit your results to government websites, more credible info, only (such as the CDC, NIH, etc.) then search in Google site:.gov (your topic)
Become familiar with the general, more credible health information finding tools such as MedlinePlus, produced by the National Library of Medicine, or Healthfinder ® from the US Department of Health and Human Services.
When you have found sites that look relevant, use the guidelines (CRAAP) to help you decide whether the information is as credible, timely, and useful as it looks.
This is especially true of information found on the open web, via Google or other search engines. While there is high-quality information to be found, there is also utter crap. Whether for one of your courses or for your personal use, one of the key parts of the research process is evaluating your information, i.e., using your Crap Detector.