Atkins is a very effective diet, and a low carb intake is manifestly healthier in all respects than one high in carbs (because the only way to get that high a carb intake is through processed flour and sugars, almost universally regarded as the white death).
To clarify Buttercup's advice, even the first two weeks of the Atkins (induction) are not 0-carb, they are <20 carbs. This basically means 2 small salads or certain vegetable servings per day. My typical induction menu was:
sausage or bacon and eggs with cheese for breakfast
hamburger patty (or two!

) with cheese for lunch and a small salad with ranch
chicken, one serving of green beans or small salad, for dinner
Snack liberally throughout the day on jerky (watch the carbs!), bacon, or some other meat.
OK, gotta go to the zoo, but I may stop back by later with more Atkins advice.