Table 1.

Electronic database search strategy: Medline (via Web of Science).

Search No.	Search Statement	No. of Citations Retrieved
1	((((MESH MAJOR TOPIC: exp: (((((body weight) OR Body Weight Maintenance) OR Body Weight) OR Body Weight Changes) OR Weight Gain) OR Weight Loss) OR MESH MAJOR TOPIC: exp: (Obesity)) OR MESH MAJOR TOPIC: exp: (overweight)) OR TOPIC: (increase NEAR/2 weight)) OR TOPIC: (change NEAR/2 weight)) OR ((TOPIC: (maintenance NEAR/2 weight AND LANGUAGE: (English)) AND SPECIES: (Humans))	438,097
2	(MESH MAJOR TOPIC: (vegetable *) AND LANGUAGE: (English)) AND SPECIES: (Humans))	3566
3	(MESH MAJOR TOPIC: exp: (Cohort Studies OR Longitudinal Studies) AND LANGUAGE: (English)) AND SPECIES: (Humans))	1,428,860
4	#3 AND #2 AND #1	39

* search term as major focus of articles; #, search number.