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Total Diet Studies By Gerald G. Moy

Total Diet Studies by Gerald G. Moy

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Total Diet Studies Summary

Total Diet Studies by Gerald G. Moy

Unless a food is grossly contaminated, consumers are unable to detect through sight or smell the presence of low levels of toxic chemicals in their foods. Furthermore, the toxic effects of exposure to low levels of chemicals are often manifested slowly, sometimes for decades, as in the case of cancer or organ failure. As a result, safeguarding food from such hazards requires the constant monitoring of the food supply using sophisticated laboratory analysis. While the food industry bears the primary responsibility for assuring the safety of its products, the overall protection of people's diets from chemical hazards must be considered one of the most important public health functions of any government. Unfortunately, many countries do not have sufficient capability and capacity to monitor the exposure of their populations to many potentially toxic chemicals that could be present in food and drinking water. Without such monitoring, public health authorities in many countries are not able to identify and respond to problems posed by toxic chemicals, which may harm their population and undermine consumer confidence in the safety of the food supply. From a trade perspective, those countries that cannot demonstrate that the food they produce is free of potentially hazardous chemicals will be greatly disadvantaged or even subject to sanctions in the international marketplace.

The goal of a total diet study (TDS) is to provide basic information on the levels and trends of exposure to chemicals in foods as consumed by the population. In other words, foods are processed and prepared as typical for a country before they are analyzed in order to better represent actual dietary intakes. Total diet studies have been used to assess the safe use of agricultural chemicals (e.g., pesticides, antibiotics), food additives (e.g., preservatives, sweetening agents), environmental contaminants (e.g., lead, mercury, arsenic, cadmium, PCBs, dioxins), processing contaminants (e.g., acrylamide, polycyclic aromatic hydrocarbons, chloropropanols), and natural contaminants (e.g., aflatoxin, patulin, other mycotoxins) by determining whether dietary exposure to these chemicals are within acceptable limits. Total diet studies can also be applied to certain nutrients where the goal is to assure intakes are not only below safe upper limits, but also above levels deemed necessary to maintain good health. International and national organizations, such as the World Health Organization, the European Food Safety Agency and the US Food and Drug Administration recognize the TDS approach as one of the most cost-effective means of protecting consumers from chemicals in food, for providing essential information for managing food safety, including food standards, and for setting priorities for further investment and study.

Total Diet Studies introduces the TDS concept to a wider audience and presents the various steps in the planning and implementation of a TDS. It illustrates how TDSs are being used to protect public health from chemicals in the food supply in many developed and developing countries. The book also examines some of the applications of TDSs to specific chemicals, including contaminants and nutrients.

About Gerald G. Moy

Gerald G. Moy: Formerly a scientist with the World Health Organization, Dr. Gerald Moy was responsible for the exposure assessment of chemical hazards and coordinated total diet studies at the international level through a network of WHO Collaborating Centers. Although retired, he remains active as a food safety adviser to the World Food Program, the Chinese National Food Safety Risk Assessment Center, the WHO Interdepartmental Mass Gatherings Group and the International Union of Food Science and Technology.

Richard W. Vannoort: A senior scientist with the Institute of Environmental Science & Research Ltd (ESR), Dr Richard Vannoort has been the scientific project leader of the last five New Zealand Total Diet Surveys. He is a leading international Total Diet Study expert and has been Technical adviser to the World Health Organization on TDSs, and other countries on numerous occasions, including international consultancies.

Table of Contents

Part 1. Conducting Total Diet Studies.-Total diet studies: What they are and why they are important.-The origin of total diet studies.-Risk analysis paradigm and total diet studies.-Overview of dietary exposure.-Scope, planning and practicalities of a total diet study.-Preparing a food list for a total diet study.-Selecting chemicals for a total diet study.-Preparing a procedures manual for a total diet study.-Food sampling and preparation in a total diet study.-Analyzing food samples: Organic chemicals.-Analyzing food samples: Inorganic chemicals.-Analyzing food samples: Radionuclides.-Quality control and assurance issues relating to sampling and analysis in a total diet study.-Commercial analytical laboratories: Tendering, selecting, contracting and managing performance.-Managing Concentration Data: Validation, security and interpretation.-Reporting and modelling of results below the limit of detection.-Dietary exposure assessment in a total diet study.-Addressing uncertainty and variability in total diet studies.-Communicating results in a total diet study.-Part 2. Experiences in Total Diet Studies.-The Australian experience in total diet studies.-Total diet study in Cameroon: A sub-Sahara African perspective.-Canadian total diet study experiences.-The Chinese experience in total diet studies.-The first total diet study in Hong Kong, China.-Experiences in total diet studies in the Czech Republic.-The present and future use of total diet studies by the European Food Safety Authority.-The first total diet study in Fiji.-The French total diet studies.-Total diet studies in the Indian context.-Experiences in total diet studies in Indonesia.-Total diet studies in Japan, Fujio Kayama.-Total diet studies in the Republic of Korea.-Dietary exposure to heavy metals and radionuclides in Lebanon.-The Malaysian experience in a total diet study.-New Zealand's experience in total diet studies.-Experiences in total diet studies in Spain.-Total diet study in the Basque Country, Spain.-Total diet studies in Catalonia, Spain.-Total diet studies in Sweden: Monitoring dietary exposure to persistent organic pollutants by a marketbasket approach.-Total diet studies: United Kingdom's experience.-United States Food and Drug Administration's total diet study program.-Part 3. Special Topics in Total Diet Studies.-GEMS/Food and total diet studies.-GEMS/Food Consumption Cluster Diets.-Food mapping in a total diet study.-Automated programs for calculating dietary exposure.-OPAL: A program to manage date on chemicals in food and the diet.-Involving and influencing key stakeholders and interest groups on a total diet study.-Linking nutrition surveys with total diet studies.-Emerging chemical contaminants in total diet studies in China.-Using total diet studies to assess acrylamide exposure.-Polybrominated diphenyl ethers in food in Australia: An additional use of the Australian Total Diet Study.-Risk assessment and management interface: Example of methylmercury in fish.-The German approach to estimating dietary exposures using food monitoring data.-Total diet studies for infants: Example of persistent organic pollutants in human milk.

Additional information

Total Diet Studies by Gerald G. Moy
Springer-Verlag New York Inc.
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