The purpose of the study reported here was to compare behavior, learni
ng, and health problems in boys ages 6 to 12 with lower plasma phospho
lipid total omega-3 or total omega-6 fatty acid levels with those boys
with higher levels of these fatty acids. A greater frequency of sympt
oms indicative of essential fatty acid deficiency was reported by the
parents of subjects with lower plasma omega-3 or omega-6 fatty acid co
ncentrations than those with higher levels. A greater number of behavi
or problems, assessed by the Conners' Rating Scale, temper tantrums, a
nd sleep problems were reported in subjects with lower total omega-3 f
atty acid concentrations. Additionally, more learning and health probl
ems were found in subjects with lower total omega-3 fatty acid concent
rations. (Only more colds and more antibiotic use were reported by tho
se subjects with lower total omega-6 fatty acids.) These findings are
discussed in relation to recent findings for omega-3 experimentally de
prived animals.