"Exercise is also important, as it promotes insulin sensitivity as well as helping burn calories. Diet and exercise during pregnancy have been shown to reduce the chances of developing GD and also of having an overly large baby. Even fifteen to thirty minutes of light exercise such as walking three times weekly can be beneficial.
Dietary changes that may benefit GD, or even prevent its development, include:
-replacing food with a high glycemic index (GI) with low GI carbohydrates
-decreasing fat and increasing carbohydrates in the diet
-increasing essential fatty acids in the diet.
It is also sensible to ensure adequate levels of chromium, magnesium, vitamin E, selenium, vitamin B6, and zinc in diet, which may help with glucose metabolism.
Other food and herbs that may be helpful include onions and garlic, aloe vera, ginseng, fenugreek.