rather than adding in fats, you can start with fatty foods - pork belly, beef, salmon... just cook as you normally would, and don't worry about adding in more fat. top with olive oil if you want.
or you could add in some healthy carbs - sweet potatoes, carrots, fruits, green plantains.
but you have to get your fuel from fats or carbs. you can't just run on protein!
"dean ornish and dr. davis think the palmitic acid our bodies use for fuel while we sleep is poison if we eat it. zero-carbers like charles washington think the oldest fuel in our evolutionary history – glucose - used by organisms a billion years ago and without which the brains of modern mammals cannot survive for more than a few minutes – is an unnatural toxin if you eat it. both views ignore basic facts of medical physiology and defy evolutionary history." - kurt harris