I’m a type one diabetic, and having a low blood sugar is one of the worst feelings in the world. I’ve started wondering the science about how things affect you when you do have a low blood sugar. For example, how quickly after drinking juice does your blood sugar start to go up? For me, while I’m stiting there and waiting while my body dumps adrenaline into my system, feels like forever!
In: Biology
Each food item has a [Glycemic index](https://en.wikipedia.org/wiki/Glycemic_index). Pure glucose is defined to be 100, and everything else is less than it, and it is precisely a measure of how fast it elevates your blood sugar.
Also an important note, GI on its own doesn’t have a direct impact on how healthy a food is. For example, ice cream is considered low GI because all the fat in it slows your digestion, which makes it absorb into your blood slower than whole grain bread.
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