Natural" progesterone (also termed USP Progesterone) refers to a single molecular structure that is "bio-identical" to the progesterone molecule that the body makes. Synthetic "progestins" or "progestogens," do not exactly duplicate the body's own progesterone molecule. They mimic the body's progesterone closely enough to bind to progesterone receptor sites and have some progesterone-like effects, but they do not deliver the full range of "messages" that a natural progesterone molecule would.

Progestins do not convey the full spectrum of progesteron's benefits as listed above and they have numerous potential deleterious side-effects not found when using natural progesterone. The natural hormones are more quickly metabolized and excreted than the synthetic versions. Progesterone has no known side effects.

Pharmaceutical progestins do not appear in the biosynthetic pathway. The fact is, they are not found in any living forms. Furthermore, being foreign to all living things, they are patentable and thereby potentially more profitable. Natural Progesterone is from a plant extraction and is not patentable

Natural hormones are, in fact, bioidentical hormones. The fact that the bioidentical hormones come from natural plants (soy or yam plants) does not make them bioidentical. From there they are taken to a chemical plant where they are further processed into the bioidentical forms. They are further tested for bioidentical purity, so that when a compounding pharmacy receives these products they are ready to be compounded into different dosage forms.

Synthetic progesterones (called 'Progestins') are drugs created and manufactured by drug companies. They are patented molecules not found in nature or our bodies. Because there are known side-effects, they are only available by prescription and require physician oversight. Synthetic progesterone once inside your body seeks out and resides in the cells, which have progesterone receptor capabilities.

According to physicians who use natural progesterone in their practices, the instructions are as follows: st Month: Use cr?me as directed. Take synthetic estrogen pill every other day or cut estrogen patch in half. nd Month: Use cr?me as directed. Take synthetic estrogen pill every third day or cut estrogen patch in quarters rd Month: Use cr?me as directed. Take synthetic estrogen pill every fourth day. If using the patch, go totally off it.

Natural progesterone, a cholesterol derivative, comes from the Mexican yam or soybeans. It matches exactly the chemical formulation of the body's own progesterone and thus causes no side effects. Manufacturers of synthetic progesterone alter the chemical makeup of progesterone in order to create progestins.

The body naturally produces three main forms of estrogen: estrone (E1), estradiol (E2), and estriol (E3). Estrone is converted from estradiol in the liver. Synthesized in the ovaries and metabolized in the liver, estradiol is the most physiologically active form of estrogen. When taken orally, estradiol is converted into estrone in the small intestine. Estriol is the shortest-acting estrogen and has a weaker effect than estradiol and estrone. Estriol remains intact when supplemented orally, i.e.

Natural fabrics: cotton, silk, Hatian cotton, etc. These fabrics must be color locked and cleaned with a solvent based cleaner by a trained professional or the colors will bleed, the upholstery will brown or yellow, etc. That is why natural fibers are more expensive to clean than synthetic. Synthetic fabrics: polyester, Herculean, denim, etc. These materials are more durable than natural fibers and can be cleaned with a water based cleaner in most cases.

Synthetic progesterone (progestins) simply do not perform the same functions in the body. They can even lower your levels of progesterone. Natural progesterone is also a precursor to many other hormones in your body, so it is imperative that it be used in its natural form.

During the years before actual menopause, estrogen may be decreasing only slightly and ovulation has ceased or is rare. Without ovulation, progesterone production is essentially zero making a woman estrogen dominant. Further supplementing the dominant estrogen simply does not make sense, and synthetic progestins have undesireable side effects.

USP (U.S. Pharmacopeia) provides standards for more than 3,700 medicines, dietary supplements and dosage forms. The "USP" on natural progesterone USP is given because it meets standards of purity (99%). To visit the website of U.S. Pharmacopeia, please click the link at the bottom of this page.

MZ: True natural Essential Oil will help you recover or maintain your health. On the other hand, the ones manufactured from chemically reconstructed molecules, using petroleum products etc… smell very strong and last for a long time. I am talking about peach/apple/lilac/lily of the Valley/gardenia/ magnolia / honeysuckle are NOT NATURAL. Even lotus goes into that category as I have yet to see someone distilling some. They can destroy your sense of smell permanently. MZ: Absolutely.

All Ethanol Products can be made with naturally derived Ethanol (commonly referred to as "Grain" alcohol), or synthetically produced Ethanol. Natural alcohol is commonly referred to as Grain Alcohol because almost all commercial alcohol produced in North America is derived from grain (corn). Not all naturally derived Ethanol however, comes from grain (corn). Ethanol can be naturally produced (fermented) from any carbohydrate source.

These minerals can be produced naturally by geologic activities or can be synthetically produced in chemical reactions. While the iron oxide mineral in both Naturals and Synthetics is similar, Natural Iron Oxides contain contaminates which often reduce their tinting strength in comparison to their Synthetic counterparts. These contaminants are of two types: those with coloring properties and those that act as an extender.

Detection of synthetic diamonds is no longer a concern for the jewelry industry. That was a key good-news message presented by Dr. James Shigley, director of research for the Gemological Institute of America, during GIA's GemFest Basel, part of the BaselWorld 2005 trade fair.