Going continuously low carb is a stress on the body. The few reasons I can see to undergo this stress are; To rid your self of a carb addiction. To make your fat fuelling and glucose producing systems stronger. To be in a state if ketosis if it helps a condition you have (like epilepsy etc).
The problem with going LC for an extended period is the systems used get chronically overworked. This can lead to metabolic problems.
There is a whole "carbs are great" side project happening on this forum because of this effect.
Unless your very new (within a month) to primal. I think you will see most benefit from doing a (non to small calorie restricting) cyclic macro diet (meaning LC somedays, HC others). Eating plenty of various, nutritious foods and following the rest of the blue print (sleep, exercise, sun etc etc).
It is my understanding that human bodies scaled back their reproductive systems first when living conditions weren't right. Meaning if they where going through a period of starving or poor nutrients (any kind of major prolonged stress) we wait for conditions to improve, before reproducing.
Even if you have some kind of acute reproductive condition, "improving conditions" is gunna give you the best chance of success. Going LC long term is not nessesarily improving living conditions, unless you have done alot of trial and error and found optimal levels. Hope that helps
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