Monosodium glutamate is not associated with overweight in Vietnamese adults.
OBJECTIVE
To determine the prevalence of and associated factors for overweight, especially to determine the relationship between the intake of monosodium glutamate (MSG) as a seasoning and overweight in Vietnam.


METHODS
A cross-sectional survey was conducted of Vietnamese adults aged ≥20 years in 2008. Dietary intake was assessed by the 24 h recall method for 3 d. MSG intake was evaluated by the weighing method on three consecutive days. Physical activity was assessed based on the Global Physical Activity Questionnaire recommended by the WHO. Overweight was defined as BMI ≥ 23·0 kg/m2. Other characteristics such as age and lifelong occupation were determined by a structured questionnaire.


METHODS
Some rural and urban areas of Hanoi, Thua Thien Hue Province and Ho Chi Minh City, Vietnam.


METHODS
A total of 1528 adults living in surveyed areas were randomly selected by the multistage cluster sampling method.


RESULTS
The prevalence of overweight was 27·9 %, and 81·0 % of participants were MSG users. Average MSG intake was 2·2 (sd 1·8) g/d. Multiple logistic regression analysis revealed that factors associated with overweight were age, region of residence, lifelong occupation, physical activity and intakes of energy, carbohydrates, saturated fat and animal protein. There was no significant association between MSG intake and overweight.


CONCLUSIONS
The study demonstrated that overweight was not associated with MSG intake in Vietnamese adults. Further longitudinal studies should be done in different populations to determine the relationship between MSG and overweight.
National Institute of Nutrition, Hanoi, Vietnam.
Vu Thi
VT
Thu Hien
Nguyen
N
Thi Lam
Nguyen
N
Cong Khan
Andrea
A
Wakita
Shigeru
S
Yamamoto
D000328:Adult; D044466:Asian People; D015992:Body Mass Index; D001835:Body Weight; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D009043:Motor Activity; D050177:Overweight / Q000453:epidemiology* / Q000209:etiology; D015995:Prevalence; D012307:Risk Factors; D012424:Rural Population; D012970:Sodium Glutamate / Q000009:adverse effects*; D011795:Surveys and Questionnaires; D014505:Urban Population; D014744:Vietnam / Q000453:epidemiology
D012970:Sodium Glutamate