ABSTRACT
To observe the effects of acute and chronic noise stress on the body weight of male albino rats. comparative and experimental study. This study was conducted at the Department of Anatomy, in Basic Medical Sciences, Institute of Jinnah Postgraduate Medical Center, Karachi for a period of 2 months. 30 rats were put under observation to observe the effects of noise. 10 were put as a control, 10 were exposed to acute noise [24 hrs] and the remaining 10 were exposed to chronic noise for [4hrs/ day for 30 days]. It was observed that the rats who were subjected to chronic noise showed more decrease in body weight as compared to the rats that were exposed to acute noise. It was modulated that stress induced cortisol release in the blood has an effect on the body weight