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Everyone's blood sugar raises a bit after they eat a meal or a snack. An increase of 20 points or so is normal. After about 2 hours, the blood sugar should return to normal (and remember this can vary so we're talking averages here). However, in diabetics blood sugar can raise much more than 20 points, sometimes even more than 100 points if it isn't controlled well, and it may stay high for longer.

This is the main reason doctors usually want to test your glucose levels at least 2 hours AFTER you've eaten.

One of the worst things for a diabetic is the roller coaster ride of glucose levels, really high and then low. This can lead to very serious health complications.

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14y ago

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If your blood sugar reading is 155 is that high?

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Is your blood sugar high if it is 193 right after lunch?

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