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Blood lead level (BLL), is a measure of the amount of lead in the blood. [1] [2] Lead is a toxic heavy metal and can cause neurological damage, especially among children, at any detectable level. High lead levels cause decreased vitamin D and haemoglobin synthesis as well as anemia, acute central nervous system disorders, and possibly death. [3]
Classically, "lead poisoning" or "lead intoxication" has been defined as exposure to high levels of lead typically associated with severe health effects. [20] Poisoning is a pattern of symptoms that occur with toxic effects from mid to high levels of exposure; toxicity is a wider spectrum of effects, including subclinical ones (those that do ...
Since the 1970s and ‘80s, when lead paint was banned and leaded gasoline phased out, median blood lead levels in the U.S. have declined by 96%, according to estimates in CDC health survey data.
Lead is widely understood to be toxic to multiple organs of the human body, particularly the human brain. Concerns about even low levels of exposure began in the 1970s; in the decades since, scientists have concluded that no safe threshold for lead exposure exists. [2] [3] The major source of lead exposure during the 20th century was leaded ...
The FDA guidance caps lead levels for children younger than 2 at 10 parts per billion for fruits, most vegetables, grain and meat mixtures, yogurts, custards and puddings, and single-ingredient meats.
Over 170 million U.S.-born people who were adults in 2015 were exposed to harmful levels of lead as children, a new study estimates. Researchers used blood-lead level, census and leaded gasoline ...
Lead Exposure Elimination Project (LEEP) is an international non-governmental organization aimed at reducing lead exposure in low- and middle-income countries. [1] Based in London, England, it was founded in 2020 to promote research and advocacy on the prevalence and consequences of lead poisoning in the developing world. [1]
There is no known safe blood lead level in children, according to the CDC. The agency uses a level of 3.5 micrograms per deciliter to identify kids with higher blood lead levels than most.