The Glycemic Index measures how quickly the body turns various foods into sugar. For a diabetic, the slower the better, so we look to prepare and serve low Glycemic Index foods.
The Glycemic Load concept is somewhat more complicated. If refers to a combination of the Glycemic Index and the level of carbohydrate in the food.
If you are caring for a diabetic, it pays to read or go online to become something of an expert on the Glycemic Index and Glycemic Load. Most of the recommendations we have already given here are for low Glycemic Index foods.
It is worth noting that, generally speaking, a diet good for diabetics is balanced, healthy, and essentially good for anyone. If the person in home care is not a diabetic, it still pays to watch carbohydrate consumption, avoid blood sugar spikes, reject the bad fats, and eat moderate amounts of food slowly.