about this participant:

Margaret Hardin, a teacher from Evergreen, CO, participated in the 2003 biomonitoring investigation entitled "EWG Study #2, flame retardants in breast milk." She gave breast milk for the study on March 11, 2003 at age 31, when her baby, Tavin, was 22 days old.

Related links:

Evergreen, CO

Participant's groups:

Women of Childbearing Age, Female, Adult


EWG Study #2, flame retardants in breast milk

Sample Date:

March 11, 2003

health & safety concerns:
chemicals found in this person
Reproduction and fertility30
Brain and nervous system30

picture of Margaret Hardin

Participant: Margaret Hardin
Found 25.5-30 of 44 tested chemicals

Margaret Hardin's breast milk contained 25.5-30 of 44 industrial compounds, pollutants and other chemicals tested, including chemicals linked to reproductive toxicity and fertility problems, brain and nervous system toxicity,

Summary of chemicals found in Margaret Hardin

chemical family level found health effects exposure routes
Polybrominated diphenyl ethers (PBDEs)highReproduction and fertility, Brain and nervous system Foam furniture, carpet padding, computers, televisions, contaminated house dust, food

Test results by chemical family (see each chemical)

polybrominated diphenyl ethers (pbdes)

25.5-30 of 44 found — see each chemical

Fire retardants in furniture foam, computers, and televisions. Accumulate in human tissues. May harm brain development.

  • cumulative level found: 201 ppb (lipid weight) in breast milk
  • High vs 20 tested in EWG/Commonweal studies (85th %ile)
9.51ppb (lipid weight) in breast milk1080

Total Polybrominated diphenyl ethers (PBDEs)

Chemicals not found in Margaret Hardin

14 chemicals

PBDE-181, PBDE-190, PBDE-105, PBDE-116, PBDE-30, PBDE-32, PBDE-10, PBDE-77, PBDE-35, PBDE-12, PBDE-13, PBDE-1, PBDE-2, PBDE-3


[1] CDC (2005). National Report on Human Exposure to Environmental Chemicals, Centers for Disease Control. http://www.cdc.gov/exposurereport/. (Methylmercury results have been compared to total mercury in CDC biomonitoring.)

See results for this participant's group