Not sure if this all helps or not, but here goes anyway
You also need to be aware, that in order to control Blood Sugars in a way where they don't shoot up too dramatically, it is prudent to be choosing Carb sources that mostly don't Promote a high Glycemic Load.
As examples, some of the lowest types are things like Tomatos GI 10, Mushrooms GI 10, Broccoli GI 14, Soybeans GI 16, Cashews GI 22, and a lot of Fruits and Veggies are lower GI, I.E. <55.
However some Fruits and Veggies aren't, I.E. Watermelon GI 73 approx, Parsnip GI 90 approx, White, Red and Sweet Potato, Moderate to High, White Potato about 87 GI approx.
Also be careful with Dried Fruits, Dates are about 105 GI approx.
However you shouldn't confuse GI with GL.
The ratings for GL are thusly 0.1-14.9 Low, 15-19.9 moderate. 20+ High.
Also High GI isn't always high GL
Example. 1 Piece wheatbread, approx GI 70, just inside the high range. Carbs approx 14g, (dependant on thickness of slice), GL 9.8%. Low.
Cereals can be a bit of Moderate to high GI, but obviously when combined with something like Milk, may lower the total GI of the meal, and in relation to total Carbs, lower GL too, but that depends on the % of Milk Carbs in the food,
There is a complex way to calculate the GL of combined Carb sources, accounting for percentages.
You take the Carb amount of one source, work out it's % of total Carbs, then multiply by the GI number.
Do the same for the other Carb source, then add the two end figures together producing a combined GI, then you can work out GL.
As an example, if you take some Wheat bread, (GI 70), and some Honey, (GI 55 approx), and you have about 21 g Carbs, 7g Honey Carbs, then with 14g Wheatbread, Honey is 33%, Wheatbread 66%
55 x 33% = 18.3. 70 x 66% = 46.6.
GI= 64.9, (rounded to 65), so GL = 13.65% Bloodsugar increase.
Your best bet for Whole-grain is first thing, or after exercise when Blood sugar is lower, as that means you might be okay with slightly higher GL foods, that won't spike your Bloodsugar too highly, as would normally be so, as they would be elevating Bloodsugar from a lower than normal level.
The only other thing to remember is, a piece of Fruit having quite a lot of Fructose content, (Fructose being simple not complex), does to my knowledge often digest in around 30 minutes, and some Fructose can convert to Fat in the Liver, so as Fructose is quite Fast acting, avoid possibly higher GL promoting foods.
If you eat Banana for example, (GI 54), don't eat large ones with about 28g Carbs in, (15.1 GL approx), incase it's a bit too high, go for smaller ones with about 18-20g Carbs in, and obviously avoid problem Fruits like Watermelon GI 73.
Good ones to have would be things like Grapes, and Berry type Fruits, as they yield antioxidents, but have low Carb amounts per berry or fruit, apples GI 38 approx from memory, 18g Carbs, good Quercetin source too.
As for Fructose conversion to Fat, some Fructose does, and probably moreso when sedentary, so if you're worried about slight Fructose related weight increases, avoid obviously higher GI / GL promoting fruits like Bananas, if you're concerned about possible effects of weight gain, even though type I is obviously due to missing Pancreatic DNA, and not weight related like type II.
Obviously your referring to type 1, but you may still find any additional weight increases may have some bearing too.
That imformation might help in some way, but if not, then no worries
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Take care.