Low carb diet leads to “clinical remission” in 3 cases of type 1 diabetes

To put it simply, using "cholesterol" as an indicator for anything is a completely oversimplified view originating in the 50s, when we didn't know enough molecular biology to know better. We've since moved on to breaking out LDL (bad) and HDL (good) cholesterol. However, as it turns out even that is too simplistic. There are further sub-classifications of LDL, such as large fluffy LDL and small dense LDL. If subclasifying LDL - Low-Density Lipoprotein - as "small and dense" seems counterintuitive, I agree. I feel like it's a result of the order in which we learned about all the forms of cholesterol, and a reflection of how complex the system is, and perhaps how much more we have left to fully understand it. As it turns out, so many of the perils of what we thought was caused by "high cholesterol", and then "high LDL/bad cholesterol" seem to be most strongly correlated with the small/dense LDL pattern. The irony is, we've been measuring everything but the main culprits, gaining an incomplete picture of what's actually going on, then ended up with wildly ineffective or harmful dietary recommendations as a result. A low fat high carb diet may reduce your cholesterol, but it can wreak havoc in so many other ways.

Bottom line is, eating a low carb, high fat diet increases all of your cholesterol (subject to individual variation), but seems to exert favorable effects on the overall ratio of the individual particles, which may be the important thing. If you're really interested in what's going on with your cholesterol, ask for a LDL particle size test, then you may be able to draw some more meaningful inferences. [1]

To me, it's a good hint that if every physical and mental aspect of your body improved on a diet, it's unlikely a bad thing. Best to discuss these things with your doctor though. Diet science is still a frustratingly murky field, so it's pretty hard to navigate right now. If you want to understand why, I highly recommend Good Calories, Bad Calories by Gary Taubes.

[1] http://education.questdiagnostics.com/faq/FAQ134

This is not necessarily a bad sign, but you should talk to your doctor about getting more advanced cholesterol blood tests.

There are different measures of cholesterol, like concentration per particle, number of particles, and size of particles, and regular bloodwork usually only measures one of those (concentration, I believe).

You can have a lot of small, empty particles, or fewer large, dense particles, and so forth. This means a regular test may not paint the whole picture, especially if you’re doing something “non-standard” like a keto diet, fasting, or if you’re losing significant body fat.

Type 1 isn't about insulin resistance in your cells, it's about not producing insulin in your pancreas. Of course type 1 diabetics with rigorous diets will have less glucose swings, but a stable A1c or daily tests doesn't mean your eyelet cells grew back. It's a bit like saying a hemophiliac is asymptotic because they haven't had any cuts lately.

These kinds of articles can come off as callus to diabetics. They're getting diet advice from their GPs and their endocrinologists. They don't need muggles telling them to eat better.