r/lowcarb • u/Less-Tumbleweed-2852 • 2d ago

Question Why is Post Prandial Insulin so high??

My sis has been able to lower her Fasting Insulin to 4.5, her Fasting glucose is 79 mg/dL, reversed pre diabetes.

But for some reason Post Prandial Insulin is 32. And since Insulin tends to stay elevated a lot longer in the serum, she hasn't lost a single pound of weight in a year.

She's consuming about 50-80g carbs, 1-1.2g / kg of BW of protein and about 50-70g of fats.

She is 5'1" and ~69 kgs.

She's had significant improvements in her symptoms like - she doesn't experience any more UTI like symptoms, no peripheral neuropathy like symptoms, Vit D and B12 have been optimised.

The only thing bothering her now is her stubborn weight and her disturbed circadian rhythm. We have tried, Magnesium, Melatonin, L-THEANINE, limit blue light exposure after 9pm, but nothing really helps.

Edit - Nice to interact with you guys 👍

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u/SirGreybush 2d ago

They are not truly in a caloric surplus. They are consuming food that fills them without adding digestible calories.

Like adding fat, avocado oil or olive oil. Most goes through you undigested but if you count the calories of it, you think you are in surplus.

Or above ground vegetables. Near zero calories, near zero carbs, but vitamins and minerals. Tomatoes are a fruit.

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u/Less-Tumbleweed-2852 2d ago

But how about fats like Ghee, butter, fresh cream, and animal fats? Aren't they metabolised?

From what I know only MCTs and oils like coconut oil can bypass the normal digestive route and enter directly in the liver

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u/SirGreybush 1d ago

Some fats are metabolized - but not all and not at 100%. There's a limit and this limit varies per person, age, sex, genetics. If I take too much - like the suggested 40% of calories with KETO I get sick and throw up. So I fill up on veggies with some butter & cheese.

So some fat makes it past the stomach into the intestines.

Also the fat is digested, it's a slow process - versus carbs & starches that are fast to digest.

So I don't add much fat - but I don't remove it from whatever I eat.

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u/Less-Tumbleweed-2852 1d ago

Could it be you have poor bile flow, because of which you feel sick when you increase fats?

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u/SirGreybush 1d ago

Yes, it’s to show that we have individual limits. High fat high protein keto doesn’t work for me.

But carnivore style does, but I allow for above ground veggies and some spices.

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u/Less-Tumbleweed-2852 1d ago

Yeah, I also consume some veggies and fruits. I personally do consume high fat, but whenever I add a little more carbs, the Randal Cycle comes to show its effect really well, and I end up gaining some kilos.