Avocado has been recommended for diabetics by The American Diabetes Association as they can lower LDL cholesterol levels without reducing beneficial HDL cholesterol. Monounsaturated fats improve heart health - an especially significant benefit for diabetics. Add few slices of avocado to your sandwiches or mash a ripe avocado with cilantro, lime juice, and diced tomato for a delicious guacamole dip.