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I have gone through your query and can understand your concern...
Yes
diabetes is as a result of decreased insulin production by Islets of Langerhans in the
Pancreas or
insulin resistance in body leading to elevated
glucose levels. But they normally does not cause seizures. To check diabetes take diet which is less in sugars & sugar rich carbohydrates. Following steps could be taken
1 Limit refined carbohydrates like white bread, pasta, and rice, as well as soda, candy, packaged meals, and snack foods.
2 Avoid heavy diet at one time. divide your diet in 4-5 small parts. A heavy diet often causes sudden increase in glucose levels
3. Exercise can help you manage your weight and may improve your insulin sensitivity. Start light exercising or walk for 30 minutes a day.
4. Complex carbohydrates containing fibers like whole grains, like oats wheats barley can be taken & protein can be taken in sufficient amount.
5. Raw vegetables & fruits could be taken anytime as a meal. Fruits with high sugar content like mangoes, grapes oranges are to be avoided.
Refer to your doctor
Hope this information helps