The researchers found that blood sugar levels were “significantly lower” for the three bean/rice treatments in contrast to the rice control at 90, 120 and 150 minutes.
“Pinto, dark red kidney and black beans with rice attenuate the glycemic response compared to rice alone,” the researchers concluded.
They added: “Promotion of traditional foods may provide non-pharmaceutical management of type 2 diabetes and improve dietary adherence with cultural groups.”
Other foods that have a more modest impact on blood sugar include some fruit and vegetables, pulses and wholegrain foods, such as porridge oats.