Abstract
To demonstrate whether nutritional lithium deficiency is associated with behavioral changes, male Sprague-Dawley rats were placed on a lithium-deficient diet (Li content < .01 ppm). A lithium-deprived group, receiving drinking water containing 31 microM NaCl, were compared to a control group receiving drinking water containing 31 microM LiCl. Growth and general appearance were the same in both groups. However, lithium-deficient animals demonstrated decreased aggression in social interactions with other rats and also in response to handling. The phase of wheel-running activity was delayed by 0.8 h and exhibited decreased amplitude (p < .05). Other behaviors, including acquisition and retention of a passive avoidance response, were unaffected by lithium deprivation.
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