@althomme:
any opinions about atkins?
The "new" version of the Atkins diet is extremely similar to the zone diet. I would just refer to that, high protein diets are fine, there's many athletes and bodybuilders who rely on them.
It was discovered the original version of the Atkins diet was "unhealthy" over long durations of time, so the protein and fat goals were pushed down and carbs were scaled up.
I think some people misunderstood why the Atkins diet works so they took it to extremes and were completely avoiding carbs (this is an extremely bad idea, you need carbs.)
Note: High protein diets are generally not associated with good heart health, which was the point of the original post. The reason for this is likely to be over consumption of certain fats and cholesterol, which is avoidable by varying protein sources, which is generally a good idea on any diet. So if the calculator tells you that you need 185g of protein a day, it's not a great idea to get that all from steak, bacon, and eggs.