LEAD 101
| Uses of Lead
Lead has been in use for centures. The most common uses are:
- Lead based paint (pre 1978)
- Lead-acid batteries
- Anti-knock gasoline additives (pre 1976)
- Plumbing (solder)
- Bullets
- Fishing weights
- Glazes in pottery or dishes (Mexico/China)
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Lead in California
- 1 of every 5 at risk children is tested for lead
- Of the estimated 127,000 children with elevated blood lead levels, only 18,000, or 14%, were identified by health officials
Attributed Source of Lead Exposure (California Dept. of Health Services)
New Cases in California 1999/Children Ages 1-20
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Source
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Number of Cases
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%
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Paint
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251
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27.6
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Soil
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108
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11.9
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Dust
|
87
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9.6
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Water
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0
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0
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|
Take-Home
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108
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11.9
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Pottery
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20
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2.2
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Cosmetic
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1
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0.1
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Home Remedy
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70
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7.7
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Hobby
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31
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3.4
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Other
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785
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8.3
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No Attributed Source
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482
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53.1
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Health Effects of Lead
- Damage to brain and nervous system
- Behavior and learning problems
- Anemia
- Slow growth
- Damages to kidney and immune system
- Reproductive health problems (adulthood)
- Vision and hearing loss
- At high levels, can cause coma and convulsions
*Effects are the same whether lead dust is inhaled or ingested
What is Childhood Lead Poisoning?
- Lead enters the blood through the ingestion or inhalation of lead particles
- Lead accumulates in the blood and bones over short or long periods of time
Children At Risk
Children under six years have the greatest risk for lead poisoning; their bodies absorb and retain more lead than adults.
- Hand to mouth behavior
- Higher food consumption per body size/weight
- Vulnerable developmental stage; brain/immune system
Signs and Symptoms
Children with Lead Poisoning may not look or act sick. Many of these symptoms can be mistaken for other illness.
- Tiredness
- Headaches
- Short attention span
- Vomiting
- Restlessness
- Poor appetite
- Constipation
- Behavioral changes (hyperactivity)
More severe signs include:
- Changes in consciousness
- Sight and hearing loss
- Convulsions
Lead Targeted Screening Policy State of California
- All low income children eligible for Medi-Cal, CHDP, Healthy Families, or WIC require a blood lead test at ages 12 and 24 months.
- If child is 15 months old and has not been tested, child needs blood lead test.
CHDP Blood Lead Testing Requirements
- Any time a "high risk" status is found regardless of age
- On all children at age 12 months and 24 months of age
- On all children between the ages of 25 and 72 months (6 years of age), who have never been tested previously.
Social Costs and Impacts of Learning Disabilities
- Nearly 40% of adults with learning disabilities have significant difficulties with employment and social adjustment
- 62% of students with learning disabilities were unemployed one year after high school
- 50% of females with learning disabilities will become mothers within 3-5 years after high school
- 50% of juvenile delinquents tested were found to have undetected learning disabilities
- 42% of adults in correctional institutions were eligible for special education
Associated Effects on Individuals, Families and Communities
- Financial stress
- Emotional stress
- Suicide
- Substance abuse
- Employment problems
- Academic difficulties
THE BIG SOURCE
- Lead-based paint hazards primarily occur in housing constructed prior to 1978
- Over 80% of housing in U.S. is constructed before 1978
- Approximately 90% of cases are associated with lead-based paint hazards
Legal Tools to Prevent Childhood Lead Poisoning
Real Estate Notification and Disclosure Rule (EPA/HUD)
- This rule applies to pre-1978 constructed housing for families
- Requires that EPA brochure "Protect Your Family From Lead in Your Home" be given to:
- All Prospective Renters
- All Prospective Buyers
Summary
- Pre-1978 housing poses the most common and threatening lead hazard to children
- Children under six have the greatest risk for lead poisoning
- Childhood lead poisoning can be prevented; have child tested at age 1 and 2
- Good nutrition and good cleaning practices can reduce childhood lead exposure in the home