More digging, and I find this http://www.rainbowminerals.net/histamine_factor.html" , first I am not so impressed, because it is from a vitamin store, but the background they present, seems to coincide somewhat to the last link I read on histamine, then, I find this:
foods high in folates (folic Acid) should be avoided. folic acid can cause a cascading histamine reaction... Folates are known to cause the release of histamines.
First red flag goes up, I have been taking folic acid supplements for over six months now, never aware that an increased level of histamines are released because of taking a daily dose, (400 mg), which could be contributing to sneezing fits. Then this:
Histamine makes the smooth muscles in the walls of the lungs, blood vessels, stomach, intestines and bladder contract. This contraction brings on a wide range of symptoms. Histamine in the lungs causes wheezing. Histamine also indirectly stimulates the production of thick, sticky mucus.
Histamine is the prime mediator in type 1 allergic reactions such as hay fever. Almost everyone has taken an antihistamine to treat hay fever and itching, to relieve nausea and vomiting or cold symptoms, or as an aid to sleep. The popularity of antihistamines is a mute testimony to the negative effects of histamine in the body. To get a good idea of what histamine can do, let us imagine the effects of an injection of a small amount.
Histamine carries its message to a large number of cells by attaching to a special receptor on the cells' surfaces. There are two kinds of histamine receptors, H1 and H2. The H1 and H2 receptors both receive histamine as a messenger, but the meaning taken by the different receptors is different. H1 receptors tend to produce the symptoms already listed and activate the allergic reaction. H2 receptors tend to act as negative feedback receptors and turn the allergic reaction off. H2 receptors also exclusively activate the acid-producing, parietal cells of the stomach lining.
Histamine dilates blood vessels and acts with prostaglandins, PGE2 and PGI2, to produce the early swelling, redness and heat of an inflammatory response. The same mediators may sensitize nerve endings to other pain-producing mediators such as bradykinin. An initial burst of mediator activity will often set a series of cell responses in motion, which will amplify and prolong disturbances for days or weeks. Once inflammation is established in tissues by immune cell invasion and mediator release, recovery may take several weeks.
finally, this:
A survey in 1994 showed that 72% of women and 42% of men aged between 19 and 50, and 89% of females aged 16-18 years do not achieve the RNI for magnesium. Low levels of magnesium in the diet and in our bodies increase susceptibility to a variety of diseases, including heart disease, high blood pressure, kidney stones, cancer, insomnia, PMS, and menstrual cramps. Signs and symptoms of magnesium deficiency are fatigue, mental confusion, irritability, weakness, heart disturbance, problems in nervous conduction and muscle contraction, muscle cramps, loss of appetite, insomnia and predisposition to stress.
Now this article has my FULL attention, because we are talking about muscle spasms, the release of histamines play a major role in the condition. And my chronic almost like clockwork morning and evening sneezing fits, can you see where this is going !?
Four days ago I decide to stop taking folic acid, 400 mg, and add magnesium 250 mg twice daily, and I can't say with 100% certainty, but I have not had a sneezing fit since.
It could be A: something in the environment changed, and the sneezing fits stopped. B: taking Folic acid was contributing to histamine rush, removing it caused the histamine rush to stop in combination with the addition of magnesium supplement. C: I plan to wait a week or so, if still no sneezing fits, I will stop taking the magnesium, and start the folic acid once more, if the sneezing fits return morning/night then I will be pretty certain that the folic acid made it worse. Nice to know that excess histamine's can cause muscle spasms as well, which would explain why lessening histamine rush helps in relieving them. The real test would be to have someone give me a placebo, one for folic acid, the other for magnesium and see what the results were, however, that would not be practical.
From the http://en.wikipedia.org/wiki/Histamine" article with four classes of histamines receptors involved in many areas of the body's functions, sleep being one of them:
Sleep regulation
Histamine is released as a neurotransmitter. The cell bodies of neurons which release histamine are found in the posterior hypothalamus, in various tuberomammillary nuclei. From here, these histaminergic neurons project throughout the brain, to the cortex through the medial forebrain bundle. Histaminergic action is known to modulate sleep. Classically, antihistamines (H1 histamine receptor antagonists) produce sleep. Likewise, destruction of histamine releasing neurons, or inhibition of histamine synthesis leads to an inability to maintain vigilance. Finally, H3 receptor antagonists increase wakefulness.
It has been shown that histaminergic cells have the most wakefulness-related firing pattern of any neuronal type thus far recorded. They fire rapidly during waking, fire more slowly during periods of relaxation/tiredness and completely stop firing during REM and NREM (non-REM) sleep. Histaminergic cells can be recorded firing just before an animal shows signs of waking.
I have excess calcium which is harmful, and magnesium helps to metabolize it properly: I have a friend who under a Dr's care has been prescribed magnesium for her severe allergies, so I know I am on the right track. See quote below from the first link at the beginning of this post:
The human body needs water-soluble magnesium to utilize calcium properly. Your body needs about two parts magnesium for every one part calcium for best antioxidant effects.* If you have proper magnesium levels, the body can use the calcium it needs and discharge the rest. Most people have more calcium in their diets than they need but an absolute shortage of magnesium. Of even more concern is the fact that the average American diet makes very little allowance for magnesium. It is of concern that large doses of calcium are currently being promoted in our diets without proper magnesium supplementation.
Rhody...