Related anecdote. A buddy of mine was dating a type1 diabetic, and he was amazed at all the advice she'd been told all her life. Basically that she should be ea

Related anecdote. A buddy of mine was dating a type1 diabetic, and he was amazed at all the advice she'd been told all her life. Basically that she should be eating mostly (fastish) carbs, counting them, and estimating how much insulin to use to keep her blood sugar down, then measure, and maybe use more insulin, or quickly eat a fast sugar to bring it back up. With type1 diabetes blood sugar control is a fine balance between losing a limb from long term too high sugar levels, and being literally too stupid to eat from too low sugar levels, and going into a coma. He's got a background in signal processing, and control theory, and his first thought was that it's basically the exact opposite of how he'd manage a signal. Eating then estimating insulin to bring down sugar levels, was basically less effecting than taking a known amount of insulin and eating to bring up sugar levels. The main reason being that too much insulin is really dangerous, and blood sugar is tricky to measure and it can be really hard to tell if it's going up or it's going down with pin prick tests, even with multiple tests, since you may be in the part of the signal that's ringing after a big delta. He was even more convinced after a little research that fat and protein and soluble fiber will slow down sugar production, which meant it was even easier to slow down the rate of sugar change through diet changes, which would make ringing less of a problem, making measurements easier, and making smaller doses of more frequent insulin a viable strategy. It took my friend months to convince his girlfriend to change her diet to lower her carb intake. But when he did it made a big impact on her overall health. The biggest change was when she stopped eating sorbet and started eating full fat ice cream at night to keep her blood sugar high enough to last until morning. It really helped prevent most of the night time blood sugar issues she was having to deal with. Her doctor even begrudgingly admitted that while "she was doing everything wrong", "all her numbers were better than normal", and she should "probably keep doing what she's doing". Also fun fact, following my friend's advice really helped me and my wife deal with her gestational diabetes with both pregnancies. We were getting a lot of bad advice, and we experimented with lots of foods, and cutting carbs really helped her keep her blood sugar down. Oddly though, potatoes for her didn't seem to have effects on her blood sugar that its glycemic index would imply, preparation didn't seem to matter, she could eat a lot more potatoes than she should have been able to. I suspect she has some kind of genetic or gut flora predisposition with regards to potatoes.