In regimented keto diets, only 10% of total calories per day (about a measly 20 grams!) come from carbs, 20% from protein, and a whopping 70% from fats. Since our bodies preferentially use carbs for energy, cutting them means we have to use something else to keep organs functioning. Our bodies then turn to the glucose stored in our muscles as glycogen for fuel.
"The keto diet is primarily used to help reduce the frequency of epileptic seizures in children. While it also has been tried for weight loss, only short-term results have been studied, and the results have been mixed. We don't know if it works in the long term, nor whether it's safe," warns registered dietitian Kathy McManus, director of the Department of Nutrition at Harvard-affiliated Brigham and Women's Hospital.
This is important because one of the primary triggers of insulin is eating. I am not talking about taking your supplements or drinking tea or even one cup of coffee in the morning but eating five to six times a day—and let’s not forget, snacking will spike insulin even if it’s healthy food. The more frequent the eating, the more there is chronic elevation of insulin, leading to insulin resistance.
Some athletes swear by the ketogenic diet, not just for weight loss but for improved performance in their sport, as well. But Edward Weiss, PhD, associate professor of nutrition and dietetics at Saint Louis University, doesn’t buy it. “I hear cyclists say all the time that they’re faster and better now that they’re on keto, and my first question is, 'Well, how much weight did you lose?'” he says.
I get asked this question a lot. Generally speaking, the answer is no. As long as you avoid vegetables like corn, beets, and carrots, which are high in starch and sugar, especially carrot JUICE, which is packed with sugar, for example, you don't have to worry about the vegetable family. In fact, you want to eat lots of green leafy vegetables, cruciferous vegetables, Brussel sprouts—make big kale salads with bacon bits and a full fat dressing. Or make a big beet green sauté in coconut oil with some bacon, garlic, and onion stirred in. These will be dishes PACKED with potassium which will quiet food cravings much like fat does. Often, food cravings are nothing more than your body crying out for NUTRIENTS and MINERALS you’re not giving it. Your body doesn’t really want chips and sugar—it wants more potassium, magnesium, vitamin A, K2, and B vitamins.
A keto diet has shown to improve triglyceride levels and cholesterol levels most associated with arterial buildup. More specifically low-carb, high-fat diets show a dramatic increase in HDL and decrease in LDL particle concentration compared to low-fat diets.3A study in the long-term effects of a ketogenic diet shows a significant reduction in cholesterol levels, body weight, and blood glucose. Read more on keto and cholesterol >