Generally, zinc is a relatively poorly absorbed (10-40%). It is ionized in the gut and then absorbed by both active and passive diffusion. The degree of absorption of ionized zinc is influenced by various factors. Unlike supplements that are ionized, Dr. Pressman®’s formula containing Albion Laboratories’® zinc bisglycinate does not have competition for absorption from selenium, calcium, and the other minerals because it does not depend upon these metal cations for transport across the brush membranes. Furthermore, phytates present in dietary whole grains and fiber have less interference with absorption of this form of zinc than others.
Zinc is a co-factor in more than 120 enzymes involved in protein, carbohydrate and DNA/RNA metabolism. Adequate zinc is especially important during periods of growth and development, such as pregnancy and childhood. It is critical to the production of growth and sex steroid hormones, as well as a structural component of many kinds of proteins hormone receptors, neuropeptides, and polynucleotides. Zinc is critical to thyroid, adrenal, and ovarian tissue function. Double-blind, placebo-controlled trials using various forms of zinc have shown that it is safe and efficacious in reducing the severity and duration of the common cold, as well as a variety of other more serious infections. The bone building effect of estrogen is enhanced by zinc. This mineral might play an important role in the development of alterations in keratinocytes with aging. Zinc is needed for the conversion of pre-formed vitamin A into its active form.
August 15th, 2009 at 9:21 pm
. Zinc is needed for the conversion of pre-formed vitamin A into its active form.
Is this why Zinc is good for the eyes?