Serum concentration of beta-carotene and intake frequency of green-yellow vegetables among healthy inhabitants of Japan.
Serum levels of beta-carotene were measured among healthy inhabitants (671 males and 948 females) of 2 towns in Japan to determine the association between the levels and intake frequency of green-yellow vegetables. Those individuals who consumed green-yellow vegetables frequently showed higher levels of serum beta-carotene than those who ate them less often. The influences of alcohol drinking, smoking, obesity and age on serum beta-carotene levels were similarly observed for the 2 areas. The factors listed above were used for adjustment, giving a significant association between intake frequency of green-yellow vegetables and serum beta-carotene level. The proportion of the subjects who rarely consumed green-yellow vegetables was larger among smokers than among non-smokers. There was a large difference in serum beta-carotene levels between the 2 towns, which could not be explained by alcohol drinking and smoking. Women showed statistically significantly higher serum beta-carotene levels than men.
Shibata
A
A
Department of Preventive Medicine, Nagoya University School of Medicine, Japan.
Sasaki
R
R
Ito
Y
Y
Hamajima
N
N
Suzuki
S
S
Ohtani
M
M
Aoki
K
K
D000328:Adult; D000367:Age Factors; D000368:Aged; D000428:Alcohol Drinking; D000704:Analysis of Variance; D002338:Carotenoids / Q000097:blood*; D004032:Diet; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012737:Sex Factors; D012907:Smoking; D014675:Vegetables; D019207:beta Carotene
D019207:beta Carotene; D002338:Carotenoids