This is from NortfFin "Double screw Steam Extrusion is a gentle form of cooking which means beneficial nutrients are kept intact right through to the finished product
unlike conventional dry extruding process that degrades and destroys significant percentage of nutrients and vitamins."
Rd would best answer. Tjat being said ive fed almost exclusively NLS products and have no regrets....i do mix in some OO but as far as the polys they get tilapia and nls mega fish. Worms as a treat