Brown rice has a lower glycemic index than white rice. However, a 2021 meta-analysis published in the journal PeerJ found no difference in blood sugar levels in people who ate brown rice versus white rice. However, the researchers found that people who ate brown rice had an easier time managing weight.Brown rice has a lower glycemic index than white rice. However, a 2021 meta-analysis published in the journal PeerJ found no difference in blood sugar levels in people who ate brown rice versus white rice. However, the researchers found that people who ate brown rice had an easier time managing weight.