Changes in blood glucose in SAMP8 mice consuming rice or barley diets: (A) Levels of blood glucose at 16, 29, 42, and 55 weeks old; (B) amount of change in blood glucose from 29 to 42 weeks old. The blood glucose in both groups increased with age from 16 to 42 weeks old. The blood glucose levels of one mouse in the rice group and one mouse in the barley group of age 42 weeks, as well as one mouse in the rice group of age 55 weeks were over the limit of detection and were therefore set at 500 mg/dL. ††; p < 0.01; within group comparison at 29, 42, 52 weeks old vs. at 16 weeks old by Dunnett test. ** p < 0.01; rice group vs. barley group by unpaired t-test.