Pooled research from 12 clinical trials of 450 participants with type 2 diabetes, found those eating an average of 2 ounces of tree nuts (almonds, hazelnuts, Brazil nuts or cashews) conveyed improved glycemic control. They experienced significantly lower levels of fasting glucose and HbA1c (a measure of blood sugar over time). It may be that the healthy nut fats convey this benefit.
PositiveTip: Substitute calories from foods with questionable nutrition for a small handful of tree nuts each day.