Pineapple is juicy, tangy and delicious fruit but are they good for diabetic people ? Yes if eaten in limited(prescribed) quantity.
It is very low in Saturated Fat, Cholesterol and Sodium. It is also a good source of Dietary Fiber, Thiamin, Vitamin B6 and Copper, and a very good source of Vitamin C and Manganese. Only bad thing about this fruit for diabetic people is A large portion of the calories in this food come from sugars and sugars(carbohydrate) is bad for diabetes.
In diabetes it is myth that diabetic people should not eat Sapodilla(sweet fruits). Fact is that total amount of carbohydrate in a food affect blood sugar is more than other sources of carbohydrate like sugar. For diabetic people one serving of fruit should contain 15 gm carbohydrate. The size of the serving depends on the carbohydrate content of the fruit. If some fruit contains less carbohydrate then that can be eaten in more quantity.
About 125 gm cubed Pineapple contains 15 gm carbohydrate, which is about 3/4 cup cubed Pineapple.
3/4 cup (125 grams) cubed Pineapple is source of 15 gm carbohydrate. So you can eat about 3/4 cup Pineapple . but you have to cut other carbohydrate intake to balance your diet.