Now days a significant part of our dietincludes various chemical additives, which if notavoided may increase the risk of developing health problems [16]. Hundreds of such additives are added in our diet to mimic natural flavor. One of the most used food additive is monosodium glutamate which is deeply involved in everyday life. Its intake has been
known to affect dietary habits and endocrine system. MSG administration results in obesity [17] and may impaired learning and memory functions [18, 19]. Ithe present study MSG administration for 3 weeks significantly impaired short term memory, long term memory and recognition memory in rats as compared to control rats. The alteration manifested as more time taken by the MSG treated rats to reach the hidden platform in water maze and shorter time spent with the new object in object recognition task.