A ketone is the by-product of fat being burned. It is basically an alternative source of energy (fuel) for your body. A more common source of body-fuel is the burning of glucose (sugar), but ketones are a preferred way of fueling the body. They are more efficient for the brain and the heart, and are better for your metabolism than running on glucose
Who says dessert can’t be keto-friendly? This sugar- and sugar alcohol-free treat is made from 100-percent stone-ground South American cocoa beans and sweetened with monk fruit and non-GMO soluble vegetable fiber, making it both low in carbs (just three net grams per ounce) and melt-in-your-mouth creamy. Throw in a handful of earthy, buttery almonds for good measure and you’ve got something that’ll appease your sweet tooth without ruining your diet.
A metabolic process called ketogenesis and a body state called ketosis are responsible. Ketosis is simply a normal metabolic pathway in which body and brain cells utilize ketones to make energy, instead of relying on only sugar (i.e., carbohydrate). In fact, humans developed an evolutionary ability to burn ketones as an adaptation to periods of food scarcity.
You’ll quickly find that salads are your friend when in ketosis, and for a good reason: they provide lots of food to fill you up, but they’re not going to bog you down. A bed of spinach with some red onion, bacon, a little tomato, and a hot sauce vinaigrette is quick and delicious. Add in some protein – perhaps that leftover salmon from day 1 – and you’ve got a complete, healthy lunch.
Still, it can be hard to get enough fat when you first start this diet. Butter, nuts, coconut and olive oils, and fatty cuts of meat are all on the menu. However, don't go overboard with polyunsaturated fats like soybean, corn, or sunflower oil. Keto dieters who increase their intake of those fats often end up with gastrointestinal distress that causes them to jump ship.