In Ayurveda, diabetes is seen as a metabolic Kapha type of disorder in which the Agni (digestive fire) has a lowered functioning. This leads to a tendency to have a high blood sugar.
It recommends a simple and effective herbal way for its control. And that is Turmeric. Taken daily just before meals it has been shown that this leads to a marked reduction in insulin.
Half a teaspoon of turmeric can also be taken along with half a teaspoon of ground bay leaf in Kumari usal (aloe vera). The mixture should be taken twice a day before lunch and dinner.
To control diabetes, half a teaspoon of the herbal mixture (Guduchi – 1 part, Shardunika 1 part, Kutki 1 part Punarnava – 2 parts) should be taken 2–3 times a day with warm water.
Ayurveda recommends a Kapha pacifying diet. You should not have excess intake of sweets, carbohydrates and dairy products. More of fresh vegetables and bitter herbs should be taken.
A cup of water stored overnight in a copper vessel is also useful. Yoga is also of great help.
For more information on diabetes and ayurveda check out
http://www.mindxpansion.com/ayurveda/aainfo.htm
