Creating Waves of Awareness
The Mineral Supplement Zinc
reprinted by Nancy Malik on Homeopathy, Science, Modern, Evidence-Based
The elemental mineral Zinc plays an important role in well being. Known to effect our sense of smell, the skin, the nervous system and mental faculties, industry includes traces of zinc in processed foods. Medical researcher shows zinc as key element in the treatment of a range of diseases, for example type 2 diabetes, prostate cancer and Alzheimer's disease.
The Discovery and Manufacture of Zinc
Zinc compounds have been used for at least 2,500 years in the production of brass. Metallic zinc was first produced in India sometime in the 1400s by heating the mineral calamine (ZnCO3) with wool. In 1746, the German chemist and physician Andreas Sigismund Marggraf heated calamine with charcoal carbon to isolate "zink." Today, most zinc is produced through the electrolysis of aqueous zinc sulfate (ZnSO4).
It is a bluish-silver, ductile metal that reacts with alkalis and acids. Zinc tarnishes in air. Zinc is found in the minerals zinc blende (sphalerite) (ZnS), calamine, franklinite, smithsonite (ZnCO3), willemite and zincite (ZnO). It is used to coat other metal (galvanizing) to protect them from rusting, 90% of the zinc is used for galvanizing steel. Zinc metal is used in the common dry-cell batteries and to make alloys such as brass, bronze. Zinc compounds are used in the manufacture of paints, cosmetics, plastics, electronic devices, and many other products.
Zinc Can Reduce Length Of Cold | Zinc supplements, taken orally within 24 hours of the first cold symptoms, could reduce the duration of the illness by half, according to a study published in the Journal of the American Medical Association.
Biological Functions of Zinc
As previously stated, zinc is the most pervasive of all trace elements involved in human metabolism. More than one hundred specific enzymes require zinc for their catalytic function (3). If zinc is removed from the catalytic site, activity is lost; replacement of zinc restores activity. Zinc participates in all major biochemical pathways and plays multiple roles in the perpetuation of genetic material, including transcription of DNA, translation of RNA, and ultimately cell division. When the supply of dietary zinc is insufficient to support these functions, biochemical abnormalities and clinical signs may develop. Studies in individuals with acrodermatitis enteropathica, a genetic disorder with zinc malabsorption resulting in severe deficiency, have provided much insight into the functional outcomes of zinc deficiency (4). These include impairments of dermal, gastrointestinal, neurologic and immunologic systems.
Zinc Improves Immune Function
Zinc affects both non-specific and specific immune functions. In terms of non-specific immunity, it affects the integrity of epithelial barrier and function of neutrophils, monocytes and macrophages. With regard to specific immunity, both lymphopenia and declined lymphocyte function occur in zinc deficiency. Although most of these effects are derived from experimental animals, studies in human subjects have also shown that altered zinc status can affect immune competence. For example, elderly subjects who received supplemental zinc demonstrated improvement in delayed cutaneous hypersensitivity, number of circulating T cells and serum IgG antibody response to tetanus toxoid (5). In other studies of experimentally induced mild zinc deficiency among adults, a reduction in serum thymulin and specific subpopulations of lymphocytes occurred during zinc depletion, and these returned to normal levels following zinc repletion (6). Although specific links between altered immunity and different infections are not well understood, changes in immune functions are clinically important because decreased rates of infections have been observed following zinc supplementation in community based studies.
Zinc is released from food as free ions during digestion. These liberated ions may then bind to endogenously secreted ligands before their transport into the enterocytes in the duodenum and jejunum (3). Specific transport proteins may facilitate the passage of zinc across the cell membrane into the portal circulation. With high intakes, zinc is also absorbed through a passive paracellular route.
The portal system carries absorbed zinc directly to the liver, and then released into systemic circulation for delivery to other tissues. About 70% of zinc in circulation is bound to albumin, and any condition that alters serum albumin concentration can have a secondary effect on serum zinc levels. Although serum zinc represents only 0.1% of the whole body zinc, the circulating zinc turns over rapidly to meet tissue needs.
Loss of zinc through gastrointestinal tract accounts for approximately half of all zinc eliminated from the body. Considerable amounts of zinc is secreted through the biliary and intestinal secretions, but most of it is reabsorbed and this process is an important point of regulation of zinc balance. Other routes of zinc excretion include the urine and surface losses (desquamated skin, hair, sweat).
Homeopathic Review Of Zinc Element
Boenninghausen provides the mental picture of one in need of homeopathic zinc. Moroseness especially in evening. Very sensitive to noise. Easily frightened, and long continued trembling after every emotion. Inclination to vehemence which greatly affects him. Extraordinarily changeable mood, in the morning buoyant, and in the evening sad.
And generalities include tearing rheumatic pains. Worse from physical exertion or when becoming heated. Violent throbbing throughout the body, and jerks at night. Painful soreness both within and externally on the body. Spasms from fright. The location of pain appears between the skin and underlying tissue. Like Nux-v and Chamomilla, worse for wine, which intensifies symptoms, especially the keynote of restlessness at night.
Dr Allen says of zinc, when people suffer from cerebral and nervous exhaustion with defective vitality, inability of brain function, like loss of comprehension and memorization difficulty, zinc covers these symptoms.
The immune system may be too weak to develop a skin rash that typically accompanies a disease or fever. The body may not have the strength to carry on menstrual function, to expectorate, or even to urinate.
Every homeopath recognizes the constant, violent fidgety of feet or lower extremities, which wears out the nervous system. The restless leg syndrome in bed often seizes with zinc. Like agaricus and ignatia, tics, twitching and jerking of single muscles may be seen.
Like the snake remedies, zinc patients feel better in every way as soon as the menses begin to flow, relieving the patient.
Historically, zinc has been used in the cerebral affections in impending paralysis of brain; where the vis medicatrix naturae is too weak to develop exanthemata (Cup., Sulph., Tub.); symptoms of effusion into ventricles.
Child repeats everything said to it. Child cries out during sleep; whole body jerks during sleep; wakes frightened, starts, rolls the head from side to side; face alternately pale and red. Convulsions: during dentition, with pale face, no heat, except perhaps in occiput, no increase in temperature (rev. of Bell.); rolling the eyes; gnashing the teeth. Automatic motion of hands and head, or one hand and head (Apoc., Bry., Hell.).
Chorea from suppressed eruption or from fright, repeating Boenninghausen. The individual has a ravenous appetite around 11 or 12 a. m. (Sulph.) and what Allen calls, "greediness" or insatiability when eating. In fact, it seems the person cannot eat fast enough, especially with these neurological disorders.
Skin and Perspiration
With the above symptoms and sweaty smelly feet and toes, after suppressing the perspiration, great nervousness. Cannot tolerate any coverings during perspiration. The necessity for zinc, covers a wide spectrum of skin disorders due to poor circulation, poor nutrition, anemia, and hormonal changes and when taking certain drugs [beta-blockers] the reduced circulation results in chillbains. These small, itchy, painful swellings, worse from rubbing, generally appear on the skin after several hours of exposure to cold temperatures.
Sexual Organs effected with pain. Scrotum and testes painful and sore. Great incitation to coition with seminal discharge. Nymphomania in lying in women, with great sensitiveness of sexual organs. Grasping at the genitals.
Nervous System Affected
Spinal affections; burning whole length of spine; backache much < from sitting > by walking about (Cobalt., Puls., Rhus). Spinal irritation; great prostration of strength. Cannot bear back touched (Chin. s., Taren., Ther.).
Strange, rare and peculiar is the ability to urinate only while sitting bent backwards.
What foods contain zinc?
Symptoms of zinc deficiency include:
• Frequent infections
• Hypogonadism in males
• Loss of hair
• Poor appetite
• Problems with the sense of taste
• Problems with the sense of smell
• Skin sores
• Slow growth
• Trouble seeing in the dark
• Wounds that take a long time to heal
What a substance can cause in a healthy individual can be cured in a sick person with the same symptoms. Thus, we can see the above side-effects match the homeopathic zinc. For example Bonninghausen lists inward pressure in the eyes, with fiery flakes on looking upward. Painful soreness on canthi with paralysis of upper lid. Could this be a more complete description of eye symptoms?
Zinc Side Effects
Zinc supplements in large amounts may cause diarrhea, abdominal cramps, and vomiting, usually within 3 - 10 hours of swallowing the supplements. It is a good thing that symptoms go away within a short period of time after the stopping the supplements.
*People who use nasal sprays and gels that contain supplemental zinc may have side effects such as losing their sense of smell. Homeopathic zinc would not incur these effects, unless used unnecessarily and unhomeopathically on a continual and unwarranted basis. Symptoms go away after stopping the use of homeopathic zinc.
RDA Dietary Recommendations
The government provides Recommended Dietary Allowance (RDA) for vitamins and supplements. Many factors help decide how much will be needed, however these variables must be tailored individually to the needs of the person.
Dietary Reference Intakes for zinc:
*Adequate Intake (AI) Children
Adolescents and Adults
Escott-Stump S, ed. Nutrition and Diagnosis-Related Care. 6th ed. Philadelphia, Pa: Lippincott Williams & Wilkins; 2008.
Sarubin Fragaakis A, Thomson C. The Health Professional's Guide to Popular Dietary Supplements. 3rd ed. Chicago, Il: American Dietetic Association;2007.
Institute of Medicine, Food and Nutrition Board. Dietary Reference Intakes: Vitamin C, Vitamin E, Selenium, and Carotenoids. National Academy Press, Washington, DC, 2000.
Singh M, Das RR. Zinc for the common cold. Cochrane Database Syst Rev. 2011 Feb 16;2:CD001364.
International Association of Infant Food Manufacturers
Three part series on zinc.
Report| Scientists designed and tested a zinc detector in Zebrafish.
In this new study, Prof Mike Watkinson, Dr Stephen Goldup and Dr Caroline Brennan, from Queen Mary's School of Biological and Chemical Sciences, have focused their efforts on the development of a sensor for zinc to be used in studies on zebrafish.
Nevertheless, evidence of human deficiency began to emerge during the 1960s, when cases of zinc-responsive dwarfism and delayed sexual maturation were first reported in Egyptian adolescents (1). Since then, a number of intervention trials have been carried out to assess the impact of zinc supplementation, particularly in low-income populations who are likely to suffer from zinc deficiency (2).
Results of these studies have shown that zinc supplementation increases growth among stunted children and reduces the prevalence of common childhood infections.
Clinical manifestations of frank zinc deficiency may vary at different ages. In early infancy, diarrhea is a prominent symptom. Zinc deficiency leads to impaired cognitive function, behavioral problems, impaired memory, learning disability and neuronal atrophy (2). Skin problems become more frequent as the child grows older. Alopecia, growth retardation and recurrent infections are common in school-age children. Chronic non-healing skin ulcers and recurrent infections are common among the elderly. These effects are derived from controlled clinical trials showing positive response to supplemental zinc.
Zinc is an essential catalytic or structural element of many proteins, and a signaling messenger that is released by neural activity at many central excitatory synapses. Growing evidence suggests that zinc may also be a key mediator and modulator of the neuronal death associated with transient global ischemia and sustained seizures, as well as perhaps other neurological disease states. Manipulations aimed at reducing extracellular zinc accumulation, or cellular vulnerability to toxic zinc exposure, may provide a novel therapeutic approach toward ameliorating pathological neuronal death in these settings.