Hi Adster, I don't know. With the digestive system trashed, many people have all sorts of multiple deficiencies and very little possiblity it would appear, of being able to get it all from diet alone. From observation, there are a whole lof of things for which the healing must way until the foundations for it are built. It wasn't until about 2 years in and many other things quite well healed that my body was able to rebuild my muslces, and only after the l-carnitine fumarate was added. Of course if I had found the paradoxical folate deficiency sooner, perhaps my digestion would have healed more sooner and been able to absorb enough to rebuild my muscles sooner. There are so many dependencies stacked on dependencies that I don't know. It wasn't until after the l-carnitine fumarate that I had full exercise tolerance back. I think maybe the mineral transport gets rebuilt after a while increasing the healing capacity of the system.