Use this search to help you limit by resource, date and more. Find specific types of websites, such as those created for academic purposes (.edu) or government (.gov).
Use Google Advanced Search for power searching on the general web
Note your ability to limit to one particular domain (.gov, .edu, .org):
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Video: Using the C.R.A.P. Test to Evaluate Websites
Use this database--provided via the U.S. Department of Agriculture--to search for nutrition research. You may also browse by subject, including dietary guidance, weight and obesity, and professional and career resources
From the U.S. Department of Health and Human Services, these profiles provide detailed demographic, language fluency (where relevant), education, economic, insurance coverage and health status information, as well as full census reports.