On Atkins... the most common-effective-healthy ratio of eating is 70% fat - 30% protein - 5% carbs and 10-12X your weight in calories (much under that will cause your metabolism to think you are starving and weightloss will cease).

It takes a while until you feel right but then it really works quite well and you will feel better then you ever did (at least a large percentage of people here do after the first week).