How soon after eating should blood sugar rise?

T

TheGreatGateway

Active Member

• Oct 4, 2020

• #1

Today I felt unusual shortly after a meal. It was admittedly pretty high carb, but I had been suffering from low sugar before so I needed it. At the half an hour after eating mark, my vision went and my brain became foggy. I checked my sugar and it was only 5 mmol despite a huge meal. It was 3.7 - 4.0 before. Shouldn't it have climbed after eating?

 

Z

zeeeee

Well-Known Member

• Oct 4, 2020

• #2

How long after eating did you check? Some see the peak after an hour others may see it after 2

personally i see the peak after 1 hour

Edit*saw you checked after 30 minutes did you do more checks after

 

Last edited: Oct 4, 2020

Lamont D

Oracle

• Oct 4, 2020

• #3

It all depends, if you have been recently diagnosed, and you have high blood glucose levels, so that means you have insulin resistance and the insulin response is not good, or alternatively you have produced too much insulin and that will drive your blood glucose levels down. Are you on meds?

 

miahara

Well-Known Member

• Oct 4, 2020

• #4

Usually take me about one hour to peak.

 

sleepster

Well-Known Member

• Oct 4, 2020

• #5

The bigger the meal, the longer it can take for your BG to rise. If I eat a meal with over 50g of carbs then I have to do a dual wave bolus on my pump or I go hypo during or shortly after eating as the insulin gets to work before the carbs

 

Brunneria

Guru

Retired Moderator

• Oct 5, 2020

• #6

Depends on what you have eaten. A mixed meal of carbs, fat, protein and fibre may take hours to peak, whereas a meal of toast and a large fruit salad might peak in less than an hour.

PRime example: people often find that pizza (which is of course fat protein and carbs in roughly equal quantities ) may take 5 hours to peak, or it has several peaks, as each of the different ingredients hits the bloodstream.

 

Robbity

Expert

• Oct 6, 2020

• #7

For me it depends on what I eat and the combination of fats and carbs for a particular meal, as @Brunneria had mentioned.

Eating a low carb full fat diet means I generally see a gentle "bump" rather than a sharper rise.