Effects of low level microwave radiation on the digestive transit of the rat

The effects of low level microwave radiation (3-4 mW/cm2--2450 MHz) during 4 and 8 h on the WISTAR Rat digestive transit has been studied. The results showed no effect after 4 h radiation and an acceleration of the digestive transit after 8 h of radiation (p less than .001). The acceleration of the digestive transit was still observed after 24 h (p less than .001). 60-90 s after radiation time the rectal temperature of radiated animals did not differ from the controls.