So I'll attempt a simple explanation of the diagram below - don't worry!
At nighttime, when the sun goes down, and even more when we go to sleep, the blue light shining on the retina is gone. The daytime dopamine receptor on the pineal gland shuts off and a nighttime receptor for norephinephrine turns on.
When norepinephrine hits this receptor, the pineal gland activates to start producing melatonin (and other important hormones). The melatonin shuts down the production of dopamine in the substantia nigra and goes on to stimulate the production of MSH in the pituitary gland. The MSH goes everywhere in the body where there are melanocytes to produce melanin and nueromelanin. Excess daytime dopamine is converted to dopachrome and used to make these melanins. Further, excess dopamine, L-DOPA, tyramine from food, and tyramine metabolized from excess tyrosine get metabolized into norepinephrine which continues to activate the pineal gland to produce melatonin while we sleep.
Pigmentation with melanin flourishes at night.
Circadian rhythm then, is chemical resonance. If we have powerful food, exercise, low stress, and sunlight in the day, we build a momentum of excess dopamine, L-DOPA, tyramine, and norepinephrine into the night. Pigmentation then builds excess storage capacity for daytime surpluses. Melatonin, a powerful antioxidant aids in repairing us. Then we have momentum, vitality, and reserve storage into the day.
Like any resonant, cycling system, it gains vitality if you activate and deactivate regularly, just at the right timing - like pushing your child on the swingset. So if you go to bed when you've still got surplus dopamine and wake up when you've got surplus melatonin, both performance and reserve accumulate. You build a black brain, rich in nutrients and stored neurotransmitters.
Behold - a part of your circadian rhythm!
I will post future segments of "The Melanin Factor" soon.
God Bless,
Glen Pettibone
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