[J] [NEUROTRANSMITTERS] Pineal gland synthesizes biopterin, a rare coenzyme. Biopterin is a cofactor of dopamine, norepinephrine, serotonin and melatonin. Magnetic fields and blue light cause biopterin deficiency. Biopterin deficiency can cause depression, circadian rhythm disorder & parkinson`s.

'The variation of pteridine levels in mouse tissues during exposure to magnetic fields'

http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.493.5580

Full text download:

www.ursi.org/Proceedings/ProcGA02/papers/p1003.pdf

'What is biopterin?'

www.wisegeek.com/what-is-biopterin.htm

"L-methylfolate affects the synthesis of neurotransmitters by regulating levels of the cofactor biopterin. Biopterin is required by tyrosine hydroxylase and tryptophan hydroxylase in the synthesis of monoamines such as dopamine (DA) and norepinephrine (NE)."

http://cdn.neiglobal.com/content/blog/messed_up_mthfr.pdf

Blue light

LCD screens, smart TVs, LCD light bulbs and compact florescent light bulbs emit blue light.

'Inhibition of pteridine biosynthesis eliminates blue-light dependent stimulation of red-light saturated photosynthesis in Laminaria saccharina (L.) Lamouroux'

www.sciencedirect.com/science/article/pii/S1011134496074647

Deficiency of sunlight reduces biopterin:

https://www.reddit.com/r/Electromagnetics/comments/3yc7vg/j_pineal_biopterin_effect_of_light_therapy_on/

Depression

'Tetrahydrobiopterin: Efficacy in endogenous depression and Parkinson's disease'

http://link.springer.com/article/10.1007%2FBF01243451

Parkinson's

"In patients suffering from Parkinson's disease a remarkable decrease in biopterin content was found in the brain......The first step in the synthesis of biopterin from GTP to 7,8-neopterin-triphosphate seems to be particularly sensitive to the action of exogenous neurotoxins. A further sensitive site of action in synthesis to the cofactor BH4 concerns the function of the dihydropteridin-reductase, which recycles qBH2 to BH4. Neurotoxin-induced impairment of biopterin synthesis is probably a pathogenetically important disorder at the initial stage of Parkinson's disease."

'Neurotoxin-induced impairment of biopterin synthesis and function: Initial stage of a Parkinson-like dopamine deficiency syndrome'

www.sciencedirect.com/science/article/pii/019701869090145J

'Neurotoxic impairment of biopterin synthesis and function'

www.nadh-apotheke.eu/NADH-Studien/NEUROTOXIN-INDUCED%20IMPAIRMENT%20OF%20BIOPTERIN.pdf

'Marked differences in biopterin metabolism between

www.karger.com/ProdukteDB/miscArchiv/NDD_2011_008_s_1/AbstractCD/pdf/1403.pdf