The Ketogenic diet (keto) is an eating plan that features a very low intake of carbohydrates, which are macronutrients found in food.
Low carb diets are eating plans that typically lower the intake of carbs to below 100 grams per day, the Ketogenic diet is the most strict of these and limits intake to less than 50 grams per day, preferably starting with 20 grams while keeping the protein intake moderate. This is one key differentiation to other low carb diets.
It is most important to understand that keto is not a fad diet or a temporary solution to weight loss, it is actually designed to be a lifestyle plan that not only results in successful weight loss, but also promotes overall health, energy, and vitality.
It eliminates junk and processed food by definition, as most carbs are just that, processed food. This makes you to eat clean, whole food for better overall health and wellness.
While some may question how sustainable it really is to drastically lower carb intake, in reality, it is quite easy with the wide variety of whole foods available, and several studies show they offer better results for weight loss than low fat diets, or even low calorie diets.
One of the reasons for this, besides various metabolic processes in the body, is that reducing carb intake naturally regulates the appetite, so people find they eat less naturally because they are satisfied and without starvation.
In general, a keto diet may be ideal for the overweight and obese, diabetics, anyone who needs to improve their metabolic health and for various other health reasons.