In her second report, Ms Ashcroft studied details of 37 cases where babies were deprived of oxygen during birth, which can cause brain damage.
In the 1970s, fears that whooping-cough vaccine might cause brain damage led to a decline in vaccine cover and an increase in outbreaks of the disease.
Measles may be uncomfortable for a child, but it can kill or cause serious brain damage in an adult.
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Even in developed countries, the mortality rate is 1 in 1000, and can also lead to measles encephalitis, which can cause comas, brain damage or death.
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He gave the cause of death as brain damage caused by a severe lack of oxygen due to anaemia.
Mercury exposure can cause permanent damage to the brain, kidneys and lungs but about 180 families live there.
But there is significant evidence that the drug can cause damage to the brain's neurons - the cells which are used for thinking.
These complications are the primary cause of serious long-term brain damage in premature babies and are associated with the subsequent development of cerebral palsy and mental retardation.
Dr Jean-Pierre Lin, consultant paediatric neurologist at Evelina Children's Hospital in London, says that in children the commonest cause is damage to the foetal brain during pregnancy which means that the brain does not develop in a normal way.
Dozens of former players have filed lawsuits against the league, arguing that hits they absorbed while playing football are the cause of chronic health problems, including brain damage from multiple concussions.
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It can cause miscarriage or damage the baby's brain or eyesight.
Many people did not know carbon monoxide can also cause long-term health problems, including heart problems (93% unaware), long-term brain damage (62% unaware) and respiratory problems (34% unaware).
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