In short, I would say that aim for low Glycemic Index (GI) food.

The glycemic index, or GI, measures how a carbohydrate-containing food raises blood glucose. Foods are ranked based on how they compare to a reference food — either glucose or white bread.

A food with a high GI raises blood glucose more than a food with a medium or low GI.

Meal planning with the GI involves choosing foods that have a low or medium GI. If eating a food with a high GI, you can combine it with low GI foods to help balance the meal.

Examples of carbohydrate-containing foods with a low GI include dried beans and legumes (like kidney beans and lentils), all non-starchy vegetables, some starchy vegetables like sweet potatoes, most fruit, and many whole grain breads and cereals (like barley, whole wheat bread, rye bread, and all-bran cereal).

Meats and fats don’t have a GI because they do not contain carbohydrate.

Below are examples of foods based on their GI.

Low GI Foods (55 or less):

- 100% stone-ground whole wheat or pumpernickel bread
- Oatmeal (rolled or steel-cut), oat bran, muesli
- Pasta, converted rice, barley, bulgar
- Sweet potato, corn, yam, lima/butter beans, peas, legumes and lentils
- Most fruits, non-starchy vegetables and carrots

Medium GI (56-69):

- Whole wheat, rye and pita bread
- Quick oats
- Brown, wild or basmati rice, couscous

High GI (70 or more):

- White bread or bagel
- Corn flakes, puffed rice, bran flakes, instant oatmeal
- Shortgrain white rice, rice pasta, macaroni and cheese from mix
- Russet potato, pumpkin
- Pretzels, rice cakes, popcorn, saltine crackers
- melons and pineapple

For more info: http://www.diabetes.org/food-and-fitness/f...h.zIxPCUyT.dpuf

Extract from my blog on how Lingzhi as effective anti-diabetic agent :

After a clinical test, Lingzhi shown to be effective antidiabetic agent by enhancing insulin secretion and decreasing hepatic glucose output along with increase of adipose and skeletal muscle glucose disposal in the late stage of diabetes [1].

In another clinical test, it was concluded that ganoderma have an antihyperglycemic effect. The possible mechanism of this antihyperglycemic effect is that Gl-PS might increase the renewal of beta cells in the pancreas or permit the recovery of partially destroyed beta cells and stimulates pancreatic insulin secretion [2].

Lingzhi also inhibits alpha-glucosidase, the chief enzyme responsible for digesting starches into sugars [3]. This prevents the sharp after-meal spike of blood glucose [4].

The interesting and amazing part is it can treat Type 1 Diabetes too.

For more info you can check it out at http://www.akusihat.com/diabetes-mellitus-...-kencing-manis/