The fatty acid composition of serum was measured for persons aged 10-7
2 (42 males and 38 females) living in southeastern Nepal. The mean amo
unts of PUFA and n-6 PUFA were significantly higher for males (79.8 an
d 72.7 mg/100 ml, respectively) than for females (68.9 and 62.3 mg/ml,
respectively) (p < 0.05). The ratio of PUFA/SFA (0.92 and 0.88 for ma
les and females, respectively) and of n-3/n-6 PUFA (0.093 and 0.104) w
ere about the same for both sexes. The percentages of PUFA and MUFA we
re 31.6 and 33. 0% for males and 30.4 and 34.4% for females, respectiv
ely, and the percentage of PUFA showed an inverse correlation with tha
t of MUFA (r = -0.82, p < 0.001). The percentage of PUFA and the ratio
of PUFA/SFA correlated inversely with the level of triglycerides (TG)
(r = -0.39 and r = -0.41, p < 0.001, respectively), which showed a po
sitive correlation with the level of oleic acid (18:1n-9) (r = 0.88, p
< 0.001). These results revealed that when the TG level was high, the
level of oleic acid was high but the PUFA percentage and the PUFA/SFA
ratio were low. Thus, a tendency of essential fatty acid deficiency w
as found with an increased TG level in the Nepalese people studied.