When taken before a meal, fiber in wheatgrass regulates absorption of sugar and cholesterol from the food. This will prevent sudden rise of blood sugar level which is commonly experienced by diabetic patients after a meal.
Wheatgrass contains high level of magnesium since this mineral is the central element in chlorophyll. Magnesium supplementation has been shown to improve insulin sensitivity. Based on current knowledge, magnesium repletion may play a role in delaying the onset of type 2 diabetes and potentially in warding off its devastating complications -- cardiovascular disease, retinopathy, and nephropathy.
Other nutrients in wheatgrass support the energy level and overall health of diabetics.