Option 3: "Make your own keto 'lunchable' with cubes of grilled chicken, a slice of nitrate-free ham, cheese cubes, pickle slices, a hard-boiled egg, a few raw grape tomatoes, raw veggies like cauliflower or broccoli, a few almonds or walnuts, guacamole, and ranch dressing," says Stefanski. (Looking for something meat-free? Here are 29 Vegetarian Keto Recipes for Plant-Based Eaters.)
High blood sugar levels coupled with high blood ketones, on the other hand, will mean that you have a pathologically low level of insulin – something non-diabetics do not suffer from. This can lead to ketoacidosis – a potentially life-threatening condition. If this happens, you’ll need to inject more insulin; if you’re at all unsure of what to do, contact a medical professional. Coveting really high blood ketones for weight control is not worth the risk for type 1 diabetics.
Moreover, in the above study of Sumithran et al. (2013), ketosis maintains post-prandial secretion of CCK as previously demonstrated by other researchers (Chearskul et al., 2008). Note that the orexigenic effect of BHB is blocked by transection of the common hepatic branch of the vagus nerve (Langhans et al., 1985). The hepatic branch contains fibers from the proximal small intestine, stomach and pancreas, and is sensitive to CCK (Horn and Friedman, 2004); ghrelin signals to brain are also transmitted via vagus nerve (Habara et al., 2014). Thus, the effects of ketosis on these two appetite-related hormones could be one of the many factors related to the effects of such nutritional regimen on food control.
Of course, ketosis itself comes with its own risks. Circulating ketone bodies make your blood too acidic, and your body will draw calcium from your bones as a buffer. This also happens in ketoacidosis, which is when you have so many ketone bodies that it becomes dangerous and will draw far more calcium out of your bones. Giancoli notes that dieters usually aren't in such an extreme starvation mode that they develop ketoacidosis. There are few to no studies on healthy adults undertaking a non-therapeutic ketogenic diet, but studies of epileptic children on the diet show increased bone demineralization and high calcium levels in the blood.
When glucose levels are low, especially over time, most cells will switch to using ketone bodies for fuel. Ketones allow cells to be metabolically flexible, so to speak. Even the brain and nerve cells, which are heavily dependent on glucose can utilize ketone bodies for fuel. This ability of most normal cells to use ketones when glucose is unavailable indicates that their cellular mitochondria are healthy and functioning properly.
We’re going full on fats with breakfast, just like we did last week. This time we’ll double the amount of ketoproof coffee (or tea) we drink, meaning we double the amount of coconut oil, butter, and heavy cream. It should come to quite a lot of calories, and should definitely keep us full all the way to dinner. Remember to continue drinking water like a fiend to make sure you’re staying hydrated.