• Guest - w'd love to know what you think about the forum! Take the 2025 Survey »

What's the worst I can eat?

MrsA2

Expert
Messages
6,900
Type of diabetes
Type 2
Treatment type
Diet only
As part of my battle with my surgery to get my diabetes recognised, I'm currently using a Libre2.
What is the worst thing/meal that I could eat to show a high and persistent rise in BG?
I only want to do it once, and nothing too addictive. I will be strict low carb before and after.
Well, that's the plan. Will it work? What food would guarantee the rise I need?
 
I’m no expert as I avoid these things. But how about two slices of toast and jam, or porridge……or even both!
 
As part of my battle with my surgery to get my diabetes recognised, I'm currently using a Libre2.
What is the worst thing/meal that I could eat to show a high and persistent rise in BG?
I only want to do it once, and nothing too addictive. I will be strict low carb before and after.
Well, that's the plan. Will it work? What food would guarantee the rise I need?
If you want to show, I'd choose to eat what is recommended, so follow the eatwell plate and go a bit on the heavy side on the carbs. Choose something you don't particularly like to prevent addictive effects.

If you want more proof, what about a sweet and fatty cake the next day? A non diabetic would be able to deal with this without going over 11 max, and going close to 11 would be suspect.

I wouldn't use something sugary without fats: they tend to spike quick but can drop quick as well.
 
As part of my battle with my surgery to get my diabetes recognised, I'm currently using a Libre2.
What is the worst thing/meal that I could eat to show a high and persistent rise in BG?
I only want to do it once, and nothing too addictive. I will be strict low carb before and after.
Well, that's the plan. Will it work? What food would guarantee the rise I need?
Well don’t leave us hanging like that’s mrsa2! What’s your plan for the data? A baseline to compare later tests with the same meal? A general test for insulin resistance? I’m intrigued!

ps worst bg meal I had before low carbs and ditched eat well was a risotto...
 
Well don’t leave us hanging like that’s mrsa2! What’s your plan for the data? A baseline to compare later tests with the same meal? A general test for insulin resistance? I’m intrigued!

ps worst bg meal I had before low carbs and ditched eat well was a risotto...
Gah sorry I’ve just read the start of your post again and have seen your plan! I’d be really interested to see what happens with your surgery - I think we’ve chatted before about being in a similar boat...
 
Thick crust pizza, or Lasagna. I’ve never actually tested those, but I could imagine the combination of fat and carbs would be pretty bad
 
994BC6B1-6340-4604-8DFB-A3EAC7E51E92.jpeg
how about half a packet of digestives, for yummy scientific reasons

I wasn’t experimenting, I literally couldn’t stop lol
 

Attachments

  • 31832E73-6266-44BE-AA39-3EAAEDBFFE8D.jpeg
    31832E73-6266-44BE-AA39-3EAAEDBFFE8D.jpeg
    12.7 KB · Views: 156
I’m no expert as I avoid these things. But how about two slices of toast and jam, or porridge……or even both!
Hummm ... when I have tested 2 hours after eating 2 slices of toast with marmalade my value has *dropped* on average by 0.8 mmol/l, whilst on testing 2 hours after 40g of porridge plus 35g of prunes it has *dropped* on average by 1.3 mmol/l. Admittedly the tests were all done at breakfast time, which may be relevant. Anyway, clearly proves that loads of high-GI carbs really improves blood glucose for T2s, like the NHS has been telling us ! Whoa there, just joking !
 
how about half a packet of digestives, for yummy scientific reasons

I wasn’t experimenting, I literally couldn’t stop lol

I did similar last Christmas, wife bought a tin of USA biscuits & I ate half the top tray washed down with a glass of milk.
Then I got the rush of guilt, took out the meter at 1 hour, got a 6 something & nearly died of shock.
Not retesting that one, nope.

We all blowout now & again, it's human
 
The McViti'es chocolate digestives are the best, only 65 grams carbs per 100 grams, on special as well this week as well.

I see your McVitees & raise you cornflakes

corn-flakes-label-nutrition-en.10.full.jpg


Only 86% carbs . . . nice

Link to famous Stanford University CGM trial with 57 students.

https://journals.plos.org/plosbiology/article?id=10.1371/journal.pbio.2005143

Actual CGM profiles from the trial using common carb meals

pbio-2005143-s004-jpg.39701
 
I've found that you get 'sprint' spikers, like rice or juice, that take you high but go down quite quickly, and 'long' spikers, like pizza and potato that take you to the start of double figures, but stay there for hours. If I were to test how badly I could spike myself, I'd probably have a big bowl of instant mash or tomato macaroni, brown bread and Fanta.
 
As part of my battle with my surgery to get my diabetes recognised, I'm currently using a Libre2.
What is the worst thing/meal that I could eat to show a high and persistent rise in BG?
I only want to do it once, and nothing too addictive. I will be strict low carb before and after.
Well, that's the plan. Will it work? What food would guarantee the rise I need?

Hi MrsA2, now that's a difficult one isn't it! I'm not sure that after following a low carb strategy for a while like you have will necessarily result in a rise from a one off high carb meal. You may find that any insulin resistance you may have previously had nearer to diagnosis has improved or even gone, meaning you could eat that high carb meal and find your levels do not rise or even end up lower. If that happened, your team would use it as evidence that you are not diabetic. It's a real dilemma actually because many people rush to go very low carb in the days following a diagnosis and then (artificially if you like) lower their numbers and get told 'You're fine, you are not diabetic'. I don't really know the answer other than to up your carbs significantly over a longer period than 'one meal' but of course I'm guessing you don't want to do that.

I think they might view you as 'glucose impaired' if anything at this stage but that won't get you your type 2 diagnosis back of course. Interesting post though, you don't often get someone battling to get their diagnosis back. I wonder how many people are out there in similar circumstances, knowing they have diabetes but managing it so well that they end up getting chucked off the register and left to fend for themselves when it comes to monitoring, foot checks, eye tests etc. Good luck though and please let us know the results of your experiment. For me, a big old carb ridden pizza sends me up and keeps me up the longest, or a curry with rice & Naan bread. x
 
As part of my battle with my surgery to get my diabetes recognised, I'm currently using a Libre2.
What is the worst thing/meal that I could eat to show a high and persistent rise in BG?
I only want to do it once, and nothing too addictive. I will be strict low carb before and after.
Well, that's the plan. Will it work? What food would guarantee the rise I need?
Christmas pudding. Might kill you, but you'll get that rise.
 
Back
Top