The effects of feeding of an experimental diet consisting of 16 and 32% of gari by weight were compared with those of the gari-free, control diet in rats. The experiment was carried out for a period of six months during which two rats from each group (A, control; B, 16% gari incorporation; and C, 32% gari incorporation) were killed for histological study. Histological examination of the aorta, liver, and kidneys revealed degenerative changes in group B and C rats, as evidenced by vacuolation and accumulation of periportal fat. These manifestations started at the third month of the experiment. At the fourth month there was massive degeneration of the arterial wall linings followed by development of fatty streaks in the lumen of the arteries.