Raju,

dr Ellis firmly believes that an all meat diet is the best one for humans, but also thinks that very few people can handle the discipline required in the long term...

He also believes that you can derive plenty of benefits from going to whatever level of carbs you are eating to 25%, and from there to 10%, and then to 0%.

As for the effects on animal fat on blood lipids, in the context of a very low carb diet, triglycerides always go down, HDL always goes up, and LDL either goes up, stays the same, or goes down.

My LDL went down while my GF's went up.

However, our triglycerides went way way down while HDL skyrocketed.