Fat isn’t bad for you.  Its what puts nuts, seeds, coconut and avocado in the “healthy” category. It provides the  building blocks for hormone production. Without enough, vital chemical reactions in your body shut down.   

Diets that emphasize eating high amounts of dietary fat typically have initial, rather than long term success in “slimming” your appearance and reducing your body weight. Those changes come by depleting the glycogen stores in your muscle tissue along with the associated water loss. You typically aren’t losing body fat on a high fat diet. You’re losing water weight.

After about five weeks on a ketogenic dietary fat overload, your appearance stops improving. You don’t see any “slimming”. You experience low energy levels. Worst of all, you haven’t cut much, if any, body fat.

If a ketogenic diet successfully cuts your body fat, it isn’t due to eating more avocado, fatty meats like bacon, or olive and coconut oils. The only way to cut body fat is a calorie deficit. 

A ketogenic diet, like any diet, works because you eat fewer calories than you burn. Unless you’re in a very small percentage of the population suited to a high fat diet (about 5%) ,  you put your overall health at risk and also make sustained fat loss a lot more difficult to maintain.