Department of Nutrition;
Guangdong Provincial People's Hospital;
Guangdong Academy of Medical Sciences;
Guangzhou 510080;
China;
Second School of Clinical Medicine;
Southern Medical University;
Guangzhou 510080;
China;
Institute of Nutrition and Health;
Medical College of Qingdao University;
Qingdao 266021;
China;
B vitamins; obesity; conditioned taste aversion; Morris water maze; cognition; transketolase;