| Hair analysis (alternative medicine) | |
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| Alternative therapy |
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In mainstream scientific usage, hair analysis is the chemical analysis of a hair sample. The use of hair analysis in alternative medicine as a method of investigation to assist alternative diagnosis is controversial [1] [2] and its use in this manner has been opposed repeatedly by the AMA because of its unproven status and its potential for healthcare fraud. [3]
In hair analysis the levels of minerals and metals in the hair sample are analyzed. [4] Alternative medicine advocates state that this allows them to diagnose mineral deficiencies, heavy metal poisoning, and that autistic people have anomalous hair test results, a eugenicist belief. [5]
As of 1998, of the nine commercial 'nutritional hair analysis' laboratories operating in the United States, three indicated that they primarily used ICP-MS, four primarily used ICP-AES, and one reported use of directly coupled plasma (DCP)-AES. DCP-AES is an older technique that is potentially less stable than ICP-AES. On average, these laboratories measure 26 elements per hair sample. Nutritional hair analysis laboratories require between 0.3 and 1 gram for the AES methods, and 0.25-1 gram for ICP-MS." [6] The amount selected depends on the analytical method used, but sample sizes in the 50 milligram range are reported. [7]
In 1983, a New York Times article criticized the industry for inconsistent results, fraudulent practices, unscientific aspects, and being "a consumer ripoff that in some cases is dangerous". [8]
In 1984, the FTC successfully obtained an injunction to stop a hair analysis laboratory's false claims to the public, on the basis that it was "inaccurate, worthless to consumers and possibly harmful because it might prevent patients from seeking proper medical attention". [9]
In a 1985 investigation of 13 commercial laboratories published in the Journal of the American Medical Association noted inconsistencies and questionable content in their reports and recommendations: [1]
The author did not explicitly rule out further diagnostic uses for hair mineral analyses in the future, but listed three issues that prevent hair mineral tests provided by the sampled labs from being accepted as scientifically sound and clinically viable: a lack of standardization and general agreement on the techniques by which hair mineral content was to be determined, a lack of general consensus on the meaning of hair mineral content analyses, and a lack of agreement on treatments for putative imbalances. [1]
The labs suggested a variety of 'abnormal conditions' were indicated by the hair samples, none of which were actually present. These varied between samples from the same test subjects. [10]
In 2001 a follow-up investigation was conducted to see if things had improved since the 1985 investigation. The authors concluded: [2]
Tests have shown that levels of heavy metal in the body may not be reflected by the levels in the hair. [11]
The American Medical Association has stated and restated twice in the last two decades their position: "The AMA opposes chemical analysis of the hair as a determinant of the need for medical therapy and supports informing the American public and appropriate governmental agencies of this unproven practice and its potential for health care fraud." [3]
In 2011 a comprehensive review was published of the scientific literature on hair elemental (mineral) analysis and is the most up to date resource on the current status. With regard to commercial practices offering services to individuals, assuming analysis is conducted correctly and compared to a suitable control population (which generally is not the case), it concluded: "offering a diagnosis as to the cause of an abnormal concentration is currently not feasible and is difficult to see as realistic". [4]
Inductively coupled plasma mass spectrometry (ICP-MS) is a type of mass spectrometry that uses an inductively coupled plasma to ionize the sample. It atomizes the sample and creates atomic and small polyatomic ions, which are then detected. It is known and used for its ability to detect metals and several non-metals in liquid samples at very low concentrations. It can detect different isotopes of the same element, which makes it a versatile tool in isotopic labeling.
The National Council Against Health Fraud (NCAHF) was a not-for-profit, US-based organization, that described itself as a "private nonprofit, voluntary health agency that focuses upon health misinformation, fraud, and quackery as public health problems."
An automated analyser is a medical laboratory instrument designed to measure various substances and other characteristics in a number of biological samples quickly, with minimal human assistance. These measured properties of blood and other fluids may be useful in the diagnosis of disease.
Soil test may refer to one or more of a wide variety of soil analysis conducted for one of several possible reasons. Possibly the most widely conducted soil tests are those done to estimate the plant-available concentrations of plant nutrients, in order to determine fertilizer recommendations in agriculture. Other soil tests may be done for engineering (geotechnical), geochemical or ecological investigations.
A multivitamin is a preparation intended to serve as a dietary supplement with vitamins, dietary minerals, and other nutritional elements. Such preparations are available in the form of tablets, capsules, pastilles, powders, liquids, or injectable formulations. Other than injectable formulations, which are only available and administered under medical supervision, multivitamins are recognized by the Codex Alimentarius Commission as a category of food.
Hair analysis may refer to the chemical analysis of a hair sample, but can also refer to microscopic analysis or comparison. Chemical hair analysis may be considered for retrospective purposes when blood and urine are no longer expected to contain a particular contaminant, typically three months or less.
Stephen Joel Barrett is an American retired psychiatrist, author, co-founder of the National Council Against Health Fraud (NCAHF), and the webmaster of Quackwatch. He runs a number of websites dealing with quackery and health fraud. He focuses on consumer protection, medical ethics, and scientific skepticism.
A drug test is a technical analysis of a biological specimen, for example urine, hair, blood, breath, sweat, or oral fluid/saliva—to determine the presence or absence of specified parent drugs or their metabolites. Major applications of drug testing include detection of the presence of performance enhancing steroids in sport, employers and parole/probation officers screening for drugs prohibited by law and police officers testing for the presence and concentration of alcohol (ethanol) in the blood commonly referred to as BAC. BAC tests are typically administered via a breathalyzer while urinalysis is used for the vast majority of drug testing in sports and the workplace. Numerous other methods with varying degrees of accuracy, sensitivity, and detection periods exist.
Metabolic typing is a pseudoscience whose proponents believe that each person has a unique metabolism, and that the proportion of macromolecules which are optimal for one person may not be for a second, and could even be detrimental to them.
Yellow rain was a 1981 political incident in which the United States Secretary of State Alexander Haig accused the Soviet Union of supplying T-2 mycotoxin to the communist states in Vietnam, Laos and Cambodia for use in counterinsurgency warfare. Refugees described many different forms of "attacks", including a sticky yellow liquid falling from planes or helicopters, which was dubbed "yellow rain". The U.S. government alleged that over ten thousand people had been killed in attacks using these supposed chemical weapons. The Soviets denied these claims and an initial United Nations investigation was inconclusive.
Oil analysis (OA) is the laboratory analysis of a lubricant's properties, suspended contaminants, and wear debris. OA is performed during routine predictive maintenance to provide meaningful and accurate information on lubricant and machine condition. By tracking oil analysis sample results over the life of a particular machine, trends can be established which can help eliminate costly repairs. The study of wear in machinery is called tribology. Tribologists often perform or interpret oil analysis data.
Inductively coupled plasma atomic emission spectroscopy (ICP-AES), also referred to as inductively coupled plasma optical emission spectroscopy (ICP-OES), is an analytical technique used for the detection of chemical elements. It is a type of emission spectroscopy that uses the inductively coupled plasma to produce excited atoms and ions that emit electromagnetic radiation at wavelengths characteristic of a particular element. The plasma is a high temperature source of ionised source gas. The plasma is sustained and maintained by inductive coupling from electrical coils at megahertz frequencies. The source temperature is in the range from 6000 to 10,000 K. The intensity of the emissions from various wavelengths of light are proportional to the concentrations of the elements within the sample.
Carl Curt Pfeiffer was a physician and biochemist who researched schizophrenia, allergies and other diseases. He was Chair of the Pharmacology Department at Emory University and considered himself a founder of what two-time Nobel prize winner, [Pauling, PhD.], named orthomolecular psychiatry and published in the Journal Science. 1968 Apr 19;160(3825):265-71.
Live blood analysis (LBA), live cell analysis, Hemaview or nutritional blood analysis is the use of high-resolution dark field microscopy to observe live blood cells. Live blood analysis is promoted by some alternative medicine practitioners, who assert that it can diagnose a range of diseases. There is no scientific evidence that live blood analysis is reliable or effective, and it has been described as a fraudulent means of convincing people that they are ill and should purchase dietary supplements.
A photoelectric flame photometer is an instrument used in inorganic chemical analysis to determine the concentration of certain metal ions, among them sodium, potassium, lithium, and calcium. Group 1 and Group 2 metals are quite sensitive to Flame Photometry due to their low excitation energies.
Ceramic petrography is a laboratory-based scientific archaeological technique that examines the mineralogical and microstructural composition of ceramics and other inorganic materials under the polarised light microscope in order to interpret aspects of the provenance and technology of artefacts.
Nutrition analysis refers to the process of determining the nutritional content of foods and food products. The process can be performed through a variety of certified methods.
Food composition data (FCD) are detailed sets of information on the nutritionally important components of foods and provide values for energy and nutrients including protein, carbohydrates, fat, vitamins and minerals and for other important food components such as fibre. The data are presented in food composition databases (FCDBs).
Doctor's Data, Inc. is a clinical laboratory based in St. Charles, Illinois that is often used by practitioners of alternative medicine.