Folic acid is used in blood production, DNA synthesis and the regulation of nerve health. I'm assuming that an excess might push any of these reactions to dangerous levels.
The body generally works and stays healthy by balancing two opposing and equally important biochemical reactions - a process called dynamic equilibrium. If a reaction has gone too far in one direction, it may be due to an overdose situation, a failure in the system or organ that uses [metabolizes] or clears [removes] the compound, or an insufficiency/ lack of the opposing compound[s]*.
*This is similar to diabetes [insulin vs glucagon], Wilson's Disease [zinc vs copper] and other 'metabolic diseases'.
Sorry - haven't located any folic acid, folate or Vitamin B9 hypervitaminosis articles. Suggest you try the sci/med search engines [scirus or copernik2001].
Because this condition is very rare in humans, you might need to search for animal studies [incl. veterinary medicine] for a description of the biochem pathways involved.
Good luck,
Jay
|