success fail Nov FEB Jun 03 2010 2011 2012 93 captures 16 Sep 2008 - 14 Jun 2019 About this capture COLLECTED BY Organization: Alexa Crawls Starting in 1996, Alexa Internet has been donating their crawl data to the Internet Archive. Flowing in every day, these data are added to the Wayback Machine after an embargo period. Collection: Alexa Crawls Starting in 1996, Alexa Internet has been donating their crawl data to the Internet Archive. Flowing in every day, these data are added to the Wayback Machine after an embargo period. TIMESTAMPS Environmental Medicine | CSEM | GREM | Continuing Education | Patient Education | PEHT | Community Section Contents Learning Objectives Introduction Exposure Dietary Exposure Smoking Absorption Effects Key Points Progress Check Case Contents Table of Contents Cover Page How to Use This Course Initial Check Cadmium Where Found Exposure Pathways Safety Standards Who is at Risk Biological Fate Pathogenic Changes Acute Effects Chronic Effects Risk Factors Clinical Assessment Laboratory Evaluation Treatment Patient Instructions More Information Posttest Literature Cited Environmental Medicine CSEM GREM PEHT Continuing Education Online Registration Patient Education Community Education ATSDR Resources ATSDR en Español Case Studies (CSEM) Exposure Pathways Health Assessments Health Statements Interaction Profiles Interactive Learning Managing Incidents Medical Guidelines Minimal Risk Levels Priority List ToxFAQs™ ToxFAQs™ CABS Toxicological Profiles Toxicology Curriculum External Resources CDC Cancer eLCOSH EPA Healthfinder® Medline Plus NCEH NIEHS NIOSH OSHA
Agency for Toxic Substances and Disease Registry
Case Studies in Environmental Medicine (CSEM)
What Factors Increase the Risk of Developing Disease from Exposure to Cadmium?
Upon completion of this section, you will be able to
- identify factors that increase the risk of developing disease following exposure to cadmium.
Cadmium is widespread throughout the environment due to its industrial uses. Whether or not an individual sustains an unusual exposure depends on many factors such as level in the diet, route of exposure, smoking, age, gender, and other physiological factors.
The body burden of cadmium increases with age due to its minimal elimination from the body (0.001% of cadmium is excreted per day) and its subsequent long half-life of 38years. Especially high exposures can occur through jobs that involve possible exposures to cadmium as well as in certain hobbies such as jewelry making which can increase exposures.
In the Jinzu River basin in Japan, environmental contamination of cadmium from manmade activities resulted in the uptake of this metal into the local rice crop. This uptake resulted in unusual levels of exposure to cadmium and the development of a severe form of cadmium poisoning in elderly post-menopausal females in that area, called “itai-itai” disease. The intake of rice accounted for 40% of the exposure suffered by the affected people. Middle-aged women in Japan were ingesting 37.5 μg/day of cadmium which was two to three times higher than other populations in southeast Asia. For comparison's sake, the average daily intake of cadmium is 6.3-27 μg/day in Europe, and 5-15 μg/day elsewhere in Asia (Tsukahara et al. 2003).
The tobacco plant preferentially concentrates cadmium regardless of the amount of cadmium in the soil. The average cigarette contains 2 μg cadmium; 2-10% of that dose is transferred by primary cigarette smoke (Mannino et al. 2004). Of that, 10% to 50% of cadmium in cigarette smoke is absorbed by the lungs. Therefore, the average smoker has two times the amount of long term cadmium in their bodies than non-smokers (Satarug and Moore 2004; Waalkes 2003).
Cadmium absorption from the intestine increases when the body's iron stores are depleted. Cadmium absorption is also increased during pregnancy (Satarug and Moore 2004; Akesson et al. 2002).
- The body burden of cadmium increases with age due to its minimal excretion.
- Smoking increases the body burden of cadmium due to the avidity of the tobacco plant for cadmium.
- Cadmium absorption increases during certain physiological states such as iron deficiency and pregnancy.
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