The recommendations for diet for people living with diabetes
really comes down to a healthy eating plan, which would benefit
anyone, even without diabetes.(13) The important concepts include a
variety of nutritious foods in moderation at routine mealtimes.(13,14)
Dietary carbohydrates, we will call this “carbs”, are a source
of blood sugar and can be modulated. Some carbs enter the
bloodstream quickly and raise blood sugar. Other carbs may enter
more slowly and may help to keep blood sugar in check. It is
important to remember that carbs are an important source of
energy for the body and should not be avoided. We will talk
about how different sources of carbohydrates affect blood sugar
and best choices.
The type of carbohydrate matters. We can use a
ranking of foods according to how much they raise
blood sugars called the “glycemic index” to
determine best choices. A low glyemic index (55 or
less) will likely have less simple sugar, more
fiber, and possibly more fat that will slow the
absorption of carbohydrates into the bloodstream. A
high glycemic index food (70 or above) may
contribute to quicker increases in blood sugar,
making it harder to control levels. However, it is
not just the single food that counts, but the whole
meal or snack. Low GI foods may help to keep higher
GI foods in check.
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It will be important to note that the application of the
glycemic index in diet education can be complicated and
daunting to patients.
It may also be important to consider the “glycemic load” or
the measure of both glycemic quality of foods (which is the
glycemic index) and the quantity of carbohydrates in the
diet.
Dietary fat recommendations are based on heart-healthy
choices for less saturated and trans fats.
Dietary protein should be consumed in moderation and other
recommendations are based on any risk factors for additional
problems, such as hypertension.