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8 Things You May Not Know About Lead Poisoning

Written by Dr. Group, DC Founder
lead pellets

Lead is a toxic metal and lead poisoning can have really ugly consequences. Lead exposure commonly happens by way of lead based paint, the CDC has reported it as the number one cause of exposure in children. Other persons are exposed to lead dust through occupational hazards. But did you know lead exposure can cause sexual dysfunction? Or that, not long ago, multiple cases of lead poisoning resulted from contaminated flour? Here are 8 things you may not know about lead and lead poisoning.

8 Facts About Lead Poisoning

1. Lead Exposure May Cause Schizophrenia

Researchers at Columbia University Mailman School of Public Health found that lead exposure can negatively affect the areas of the brain that are linked to schizophrenic behavior. [1]

2. Lead Poisoning Can Cause Erectile Dysfunction

Research conducted at Turkey's Konya Research and Training Hospital found that chronic lead exposure was a factor responsible for increased frequency of erectile dysfunction. [2]

3. Lead Poisoning Can Unexpectedly Affect Pregnant Women

We all know lead poisoning is toxic and its horrible effect is multiplied when it affects pregnant women. That said, many pregnant women take extra precautions to avoid toxic metal exposure. But what if exposure happened years prior?

Lead may stay in the bones, immobilized, for decades and only mobilized when calcium needs increase during pregnancy. This leads to pregnant women and their unborn children being at a higher risk for complications from lead exposure, including anemia, high blood pressure, low birth weight, and developmental delays. This can be extremely frightening because the length in time between exposure and effect can make evaluation very difficult. [3]

4. Lead is Toxic to Animals

The focus on lead poisoning is not limited to humans. The Department of Biomedical Sciences at Tufts University School of Veterinary Medicine reviewed 45 years worth of literature and found 70 incidences that involved cats. Symptoms of poisoning can be less apparent in animals and researchers warned that lead toxicosis may be an under recognized concern in felines. [4]

5. Lead is Toxic to People Who Eat Animals

Hunting is usually done with lead ammunition. While previously dismissed as an "unlikely source of lead exposure" researchers have more recently warned that lead bullets can fragment upon impact and particles can distribute, polluting the meat. This is a potential lead exposure risk for anyone who ingests the meat of wild game that was hunted with lead ammunition. [5]

This has been of particular concern in Greenland. Research has shown a close relationship between how often adults consume wild birds taken during hunting and measured levels of lead in blood. The situation is severe enough that lead shot is fingered as the primary source of lead exposure for persons in Greenland. [6]

6. Lead has Been Found in Children's Toys

In 2003, the Deschutes County Health Department and the Oregon Department of Human Services reported a lead poisoning incident involving a boy who had swallowed a metal trinket that was sold in a vending machine. [7]

Additionally, the Department of Chemistry at Ashland University in Ohio found, when evaluating paint scraped off plastic jewelry items, lead limits to be in excess of regulatory limits. Furthermore, these were on items intended for children! Just another reason to avoid plastic junk. [8]

7. Lead Can Significantly Contaminate Food

In 1996, a community in Chile was the subject of a massive lead poisoning incident caused by contamination of flour. Apparently, a grinding stone at the flour mill had been repaired with lead. Unfortunately, persons under six year of age at the time of exposure had a low IQ when 10 year follow up measurements were evaluated. [9]

8. Lead May Have Killed Beethoven

The Department of Psychiatry at the University of Ottawa conducted a toxicological analysis of Beethoven’s hair and discovered high lead levels. Lead was a common, albeit illegal, additive to wine during the 18th and 19th centuries. Researchers hypothesized Beethoven may have actually died due to a combination of liver cirrhosis, lead poisoning, and kidney failure, rather than the syphilis that is often cited. [10]

References (9)
  1. Guilarte TR, Opler M, Pletnikov M. Is lead exposure in early life an environmental risk factor for Schizophrenia? Neurobiological connections and testable hypotheses. Neurotoxicology. 2012 Jun;33(3):560-74. doi: 10.1016/j.neuro.2011.11.008. Epub 2011 Dec 9. Review.
  2. Gonulalan U, Hayırlı A, Kosan M, Ozkan O, Yılmaz H. Erectile dysfunction and depression in patients with chronic lead poisoning. Andrologia. 2012 Nov 1. doi: 10.1111/and.12029.
  3. Alba A, Carleton L, Dinkel L, Ruppe R. Increased lead levels in pregnancy among immigrant women. J Midwifery Womens Health. 2012 Sep-Oct;57(5):509-14. doi: 10.1111/j.1542-2011.2012.00166.x. Epub 2012 Aug 21. Review.
  4. Knight TE, Kumar MS. Lead toxicosis in cats-a review. J Feline Med Surg. 2003 Oct;5(5):249-55. Review.
  5. Pain DJ, Cromie RL, Newth J, Brown MJ, Crutcher E, Hardman P, Hurst L, Mateo R, Meharg AA, Moran AC, Raab A, Taggart MA, Green RE. Potential hazard to human health from exposure to fragments of lead bullets and shot in the tissues of game animals. PLoS One. 2010 Apr 26;5(4):e10315. doi: 10.1371/journal.pone.0010315.
  6. Johansen P, Pedersen HS, Asmund G, Riget F. Lead shot from hunting as a source of lead in human blood. Environ Pollut. 2006 Jul;142(1):93-7. Epub 2005 Nov 8.
  7. Centers for Disease Control and Prevention (CDC). Lead poisoning from ingestion of a toy necklace--Oregon, 2003. MMWR Morb Mortal Wkly Rep. 2004 Jun 18;53(23):509-11.
  8. Yost JL, Weidenhamer JD. Lead contamination of inexpensive plastic jewelry. Sci Total Environ. 2008 Apr 15;393(2-3):348-50. doi: 10.1016/j.scitotenv.2008.01.009. Epub 2008 Feb 19.
  9. Coria C, Cabello A, Tassara E, López E, Rosales H, Pérez M, Zavala C, Muñoz P, Orellana G, Inostroza MI, Contreras L, Kirsten L. [Long term consequences among children exposed to lead poisoning]. Rev Med Chil. 2009 Aug;137(8):1037-44. doi: /S0034-98872009000800006. Epub 2009 Nov 4. Spanish.
  10. Mai FM. Beethoven's terminal illness and death. J R Coll Physicians Edinb. 2006 Oct;36(3):258-63.

†Results may vary. Information and statements made are for education purposes and are not intended to replace the advice of your doctor. If you have a severe medical condition or health concern, see your physician.


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