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NUTR 337 Introduction to Nutrition Research Methods

Here you will find research tips and links to resources to help Nutrition & Dietetics students with their research


When should you use MeSH?

Test your keywords in the recommended databases

  1. Review the results list
  2. Are your keywords included in the titles?
  3. If not, you should search MeSH to determine what keyword(s) to use

Here's how:


Select MeSH from the bottom right of the main PubMed search page

Run keyword search, select the highlighted terms to learn more about synonyms, and the hierarchy of the term within it's PuMed category

Methodology & Population characteristics

Filter by Methodology and Population Characteristics

Depending on the database you are using you may be able to filter your results by Methodology, and population characteristics such as Age or Gender

Apply filters such as age, gender, methodology to find research designs that have applied the methods you need.  Use the "show more" link to find other choices where necessary.


Hover your cursor over the flashing buttons to learn about the best practices for searching PubMed

PubMed uses automat term mapping - using the AND operator turns off this feautre and may exclude relevant results. Hover your cursor over the flashing  to learn more.

Nutrition and Food Sciences Database


Database Thinglink images and video tutorials

The following images and video tutorials highlight basic search strategies for just a few of the highly recommended databases to use for your research.


Nutrition and Food Sciences Database

Hover your cursor over the flashing bluearrows to learn more

Nutrition and Food Science Database Video Tutorial

Web of Science


Web of Science

Hover your cursor over the flashing greenarrows to learn more

Web of Science Video Tutorial




Hover your cursor over the flashing orangearrows to learn more

ScienceDirect Video Tutorial


Cited Reference & Bibliographic Searching

Cited Reference Searching

Enhance your research with citation-linking tools for in-depth topic exploration. Utilize Web of Science for locating articles citing known works and discover further through the "Times Cited" feature. Expand your search with Google Scholar's citation-linking for finding articles that cite your source. Dive deeper into the citation network to connect with referenced works and authors, ensuring a comprehensive understanding of your subject area.

Watch the Videos Below to Learn How

Web of Science - How to do a Cited Reference Search

Google Scholar Citation Linking

Evaluate & Improve Search Results

Refining Your Search Results: Evaluate and Improve

This section merges critical evaluation techniques with strategies for improving your searches, guiding you towards more relevant, high-quality information. Whether you're encountering too many results or too few, the tips below will help you adjust your search to better align with your research needs. Learn how to fine-tune your search results to ensure they align closely with your research needs!

Evaluate Your Search Results:

When You Have Too Many Results:

  • Add More Specific Keywords: Narrow your search with additional, specific terms related to your topic.
  • Apply More Filters: Refine your results by using filters like publication date, material type, and subject/topic/category.

When You Have Too Few Results:

  • Reduce Keywords: Limit the number of keywords to broaden your search scope.
  • Use Less Specific Keywords: General terms can help uncover more results.
  • Try Different Databases: Different platforms may offer varied results based on their collection scope.
  • Adjust Boolean Operators: Utilize more "OR" operators between synonyms to include a wider range of terms and fewer "AND" operators to avoid overly restricting your search.


When You Have Too Many Results

When You Have Too Few Results

To reduce the number of results you are getting:

  • Add additional keywords to your search
  • Use more specific keyword to describe the topic
  • Apply Filters:
    • Publication Date 
    • Material Type
    • Subject, Topic, Category Filters 

To increase the number of results you are getting:

  • Reduce the the number of keywords
  • Use less specific keywords to describe the topic
  • Try a different database
  • Use more OR operators between synonyms  
  • Use fewer AND's between keywords 


Improve Your Search Results:

  • Revisit Keywords and Parameters: Analyze your initial search results. If necessary, refine your approach by incorporating additional, more precise keywords.
  • Leverage Author-Supplied Keywords: Review keywords provided by authors in relevant articles to discover new search terms.
  • Consider Controlled Vocabulary: Use standardized terms from controlled vocabularies (e.g., MeSH in PubMed) to target your search more effectively.

Get the Full-text

Get the Full-Text of Articles

Finding the full text of articles is an essential step in your research journey. Here you will see strategies and tools to access the full-text of the articles you need in you research process.

1) GetIt@CSULB Link

2) Find the pdf linked in the database

3) Request Article(s)

When the full-text of an article isn't available in OneSearch, click 'GET IT' for options. CSU+ is your primary choice for accessing items not held by CSULB. For articles beyond our collection, use the provided link to request them through Interlibrary Loan services, ensuring a straightforward process to obtain the resources you need. Learn more about the interlibrary loan services here.