A keto diet is well known for being a low carb diet, where the body produces ketones in the liver to be used as energy. It's referred to as many different names - ketogenic diet, low carb diet, low carb high fat ( LCHF), etc.
The ketogenic diet deprives the body of carbohydrates for fuel. Instead, the body uses ketone bodies, a type of fuel that the liver produces from stored fat. Keto diet followers must eat fat at each meal. In a daily 2,000-calorie diet, that might loo...
Unlike other low-carb diets, which focus on protein, a keto plan centers on fat, which supplies as much as 90% of daily calories. The keto diet aims to force your body into using a different type of fuel. Instead of relying on sugar (glucose) that comes from carbohydrates (such as grains, legumes, vegetables, and fruits), the keto diet relies on ketone bodies, a type of fuel that the liver produces from stored fat.
Some healthy unsaturated fats are allowed: almonds, walnuts, seeds, avocados, tofu, and olive oil. But saturated fats from oils (palm, coconut), lard, butter, and cocoa butter are encouraged in high amounts.
Protein is part of the keto diet, but it doesn't typically discriminate between lean protein foods and protein sources high in saturated fat such as beef, pork, and bacon.
You can have certain fruits (usually berries) in small portions. Vegetables are restricted to leafy greens (kale, Swiss chard, spinach), cauliflower, broccoli, Brussels sprouts, asparagus, bell peppers, onions, garlic, mushrooms, cucumber, celery, and summer squashes.
At first, the cravings were like "a drug withdrawal," Jay Wortman recalls. Lying on a hotel bed in Ottawa one night, he'd had to white-knuckle his way out of eating Ferrero Rocher chocolates he'd spirited off a flight.
Carbohydrates account for about half the calories on average in the American diet. Rice, maize, and wheat provide 60 percent of the world's food energy intake, even though there are more than 50,000 edible plants.
Keto is practically no-carb, forbidding processed junk foods and severely limits grains, including whole grains, fruits, and legumes such as brown rice, apples, and lentils. Keto adherents think conventional nutritional wisdom is harmful.