Lecture 7 Flashcards
what are ‘empty calories’
‘empty calories’; no nutrient value just energy
What does “The 2015 US dietary guidelines for americans” say about How Much Sugar We Should Eat?
Less than 10% of the total daily energy intake should be from sugar)
these should come preferentially from fruits (especially whole fruits) and grains (at
least half of which are whole grains)
What does the “National obesity forum (NOF) - UK - 2015” say about How Much Sugar Should We Eat?
The optimum sugar consumption for health is zero
what is the Glycemic Index (GI)
Represents the degree and duration that a particular food increases glycemia
how is Glycemic Index (GI) determined
determined by calculating the area under the curve for blood glucose during the 2 hour period subsequent to the ingestion of a particular type of food that provides 50g of digestible (available) carbohydrate
what is considered a low Glycemic Index (GI)
Low: anything below 55
what is considered a medium Glycemic Index (GI)
Medium: anything between 55 and 69
what is considered a high Glycemic Index (GI)
High: anything 70 and above
100 represents the GI of what?
white bread
Sucrose is a combination of what?
Sucrose = glucose + fructose
Glycemic Load (GL)
basically the GI normalized to serving standards
(GI in response to a portion instead of a fixed amount of carbohydrates)
Practical Use of GI and GL:
Although controversial, the use of GI and GL in dietary planning can be helpful in the prevention of obesity, as well as in the management of diabetes
Different people respond higher than others to the same amount of food