There are many reasons for trying the ketogenic diet: to improve cognitive focus, assist in burning/metabolizing fat more easily and studies show improved athletic endurance. If you are transitioning from the standard American diet into a Ketogenic diet you will find success with weight loss and fat adapted diet protocols for reducing overall body fat.
The Paleo diet is a nutrient-dense whole food diet based on eating a variety of quality meats, seafood, eggs, vegetables, fruits, nuts, and seeds. Avoiding all grains, lectins and inflammatory food groups. It improves health by providing balanced and complete nutrition while avoiding most processed and refined foods and empty calories.