White rice has been associated with type 2 diabetes while brown rice is inversely associated. This study looked at 166 overweight adults ages 25-65. They were placed on either a brown rice or white rice diet and the outcomes looked at were blood glucose, insulin, glycosylated Hb (HbA1c), insulin resistance, and lipids as well as high-sensitivity C-reactive protein (hs-CRP). The primary outcomes were not significantly different from one another except for hemoglobin HbA1c where there was a reduction in the brown rice group. There were greater differences between brown and white rice groups in people with a BMI greater than 25 in regards to HbA1c and lipids.
TL;DR Brown rice is likely beneficial in those with diabetes and possibly decreasing inflammation in comparison to white rice