An extreme low carb diet would generally be considered to be a restrictive Keto diet with under 30 grams of carbs a day, or a “no-carb” diet with even fewer than 20 grams of carbs a day. What are Carbs? Carbs (carbohydrates) are one of the three main macronutrients. Macronutrients are the nutrients that your body needs in large quantities to survive. The other two macronutrients are protein, and fat. Carbs are made of sugar, starches, and fibers. The digestive system breaks carbs down into glucose, or blood sugar. The bloodstream absorbs the glucose and uses it as energy to fuel the body. There are different types of carbs. The…