Clinical Reviews in Allergy & Immunology

, Volume 39, Issue 2, pp 95–141

Food Safety

  • Andrea Borchers
  • Suzanne S. Teuber
  • Carl L. Keen
  • M. Eric Gershwin
Article

DOI: 10.1007/s12016-009-8176-4

Cite this article as:
Borchers, A., Teuber, S.S., Keen, C.L. et al. Clinic Rev Allerg Immunol (2010) 39: 95. doi:10.1007/s12016-009-8176-4

Abstract

Food can never be entirely safe. Food safety is threatened by numerous pathogens that cause a variety of foodborne diseases, algal toxins that cause mostly acute disease, and fungal toxins that may be acutely toxic but may also have chronic sequelae, such as teratogenic, immunotoxic, nephrotoxic, and estrogenic effects. Perhaps more worrisome, the industrial activities of the last century and more have resulted in massive increases in our exposure to toxic metals such as lead, cadmium, mercury, and arsenic, which now are present in the entire food chain and exhibit various toxicities. Industrial processes also released chemicals that, although banned a long time ago, persist in the environment and contaminate our food. These include organochlorine compounds, such as 1,1,1-trichloro-2,2-bis(p-chlorophenyl)ethane (dichlorodiphenyl dichloroethene) (DDT), other pesticides, dioxins, and dioxin-like compounds. DDT and its breakdown product dichlorophenyl dichloroethylene affect the developing male and female reproductive organs. In addition, there is increasing evidence that they exhibit neurodevelopmental toxicities in human infants and children. They share this characteristic with the dioxins and dioxin-like compounds. Other food contaminants can arise from the treatment of animals with veterinary drugs or the spraying of food crops, which may leave residues. Among the pesticides applied to food crops, the organophosphates have been the focus of much regulatory attention because there is growing evidence that they, too, affect the developing brain. Numerous chemical contaminants are formed during the processing and cooking of foods. Many of them are known or suspected carcinogens. Other food contaminants leach from the packaging or storage containers. Examples that have garnered increasing attention in recent years are phthalates, which have been shown to induce malformations in the male reproductive system in laboratory animals, and bisphenol A, which negatively affects the development of the central nervous system and the male reproductive organs. Genetically modified foods present new challenges to regulatory agencies around the world because consumer fears that the possible health risks of these foods have not been allayed. An emerging threat to food safety possibly comes from the increasing use of nanomaterials, which are already used in packaging materials, even though their toxicity remains largely unexplored. Numerous scientific groups have underscored the importance of addressing this issue and developing the necessary tools for doing so. Governmental agencies such as the US Food and Drug Administration and other agencies in the USA and their counterparts in other nations have the increasingly difficult task of monitoring the food supply for these chemicals and determining the human health risks associated with exposure to these substances. The approach taken until recently focused on one chemical at a time and one exposure route (oral, inhalational, dermal) at a time. It is increasingly recognized, however, that many of the numerous chemicals we are exposed to everyday are ubiquitous, resulting in exposure from food, water, air, dust, and soil. In addition, many of these chemicals act on the same target tissue by similar mechanisms. “Mixture toxicology” is a rapidly growing science that addresses the complex interactions between chemicals and investigates the effects of cumulative exposure to such “common mechanism groups” of chemicals. It is to be hoped that this results in a deeper understanding of the risks we face from multiple concurrent exposures and makes our food supply safer.

Keywords

InfectionFood allergiesFood additivesToxicologyDiarrheaFood safety

Abbreviations

ACh

Acetyl choline

AChE

Acetyl cholinesterase

ADI

Acceptable daily intake

AGD

Anogenital distance

AR

Androgen receptor

ATSDR

Agency for Toxic Substances and Disease Registry

BBP

Benzyl butyl phthalate

BSE

Bovine spongiform encephalopathy

bw

Body weight

CDC

Centers for Disease Control and Prevention

CONTAM

Panel on Contaminants in the Food Chain (EU)

DAP

Dialkyl phosphate

DBP

Di(n-butyl) phthalate

DDT

1,1,1-Trichloro-2,2-bis(p-chlorophenyl)ethane (dichlorodiphenyl dichloroethene)

DEHP

Di-(2-ethylhexyl) phthalate

DEP

Diethyl phthalate

EFSA

European Food Safety Authority

EU

European Union

DON

Deoxynivalenol (a mycotoxin)

FB1

Fumonisin B1

FSIS

Food Safety Inspection Service

GM

Genetically modified

IARC

International Agency for Research on Cancer

JECFA

Joint (WHO/FAO) Expert Committee for Food Additives and Contaminants

MRL

Maximum residue limit

NHANES

National Health and Nutrition Examination Survey

NOAEL

No observed adverse effect level

NRC

National Research Council

OP

Organophosphate

OTA

Ochratoxin A

OVA

Ovalbumin

PCB

Polychlorinated biphenyl

PCDD

Polychlorinated dibenzo-p-dioxin

PCDF

Polychlorinated dibenzofuran

PMTDI

Provisional maximum tolerable daily intake

PTWI

Provisional tolerable weekly intake

Rfd

Reference dose (set by the USEPA)

SCF

Scientific Committee for Food

TCDD

2,3,7,8-Tetrachlorodibenzo-p-dioxin

TDI

Tolerable daily intake

TWI

Tolerable weekly intake

vCJD

Variant Creutzfeldt-Jakob disease

USEPA

US Environmental Protection Agency

USFDA

US Food and Drug Administration

USDA

US Department of Agriculture

ZEA

Zearalenone (a mycotoxin)

Copyright information

© Humana Press Inc. 2009

Authors and Affiliations

  • Andrea Borchers
    • 1
  • Suzanne S. Teuber
    • 1
  • Carl L. Keen
    • 2
  • M. Eric Gershwin
    • 1
  1. 1.Division of Rheumatology, Allergy, and Clinical ImmunologyUniversity of California at Davis School of MedicineDavisUSA
  2. 2.Department of NutritionUniversity of California at DavisDavisUSA