Embase search query:
overweight AND 'low fat diet' AND 'low carbohydrate diet' NOT 'diabetes mellitus'
Filters applied: Article (Publication type); 2008-2012 (Publication Year)
Explanation of search query:
The best database searches are combinations of logical keywords and subject headings.
Keywords: overweight
EMTREE terms (Embase subject headings plus MeSH): low fat diet; low carbohydrate diet; diabetes mellitus
Note: obesity is an Emtree term, but the more general term, overweight, may be better for the patient's context.
In Embase, always use single or double quotes around ALL phrases (this includes Emtree subject terms and keyword phrases). If this search had included both AND and OR, parentheses would be necessary as well. (See PubMed and CINAHL search examples for an explanation of how parentheses function in a search.)
Filters/Limits: Run searches from the Advanced Search page for full filtering options; fyi for future Embase searches, Male and Female are Emtree terms—you can AND them into your search, if necessary.