Previous studies have shown that violence and stress make asthma worse. Celedón and his colleagues wanted to know to what extent this was a contributing factor to asthma rates in Puerto Ricans, so they interviewed 1213 children and their primary caregivers living in either San Juan or Caguas.
They inquired about large stress factors, such as a death in the family or a divorce, and also about exposure to community violence, such as being shot at, arrested, chased by a gang or the victim of a break-in.
Parents and children were interviewed separately about abuse, which included being hit by an object, punched and being asked to touch the private parts of adults. Some 6% were classed as having experienced some form of abuse.
Data on whether the children had ever suffered from asthma, took medication for it, or had seen a doctor in the past 12 months for the condition, were also collected.
The researchers found that children with a history of physical or sexual abuse were twice as likely to have asthma. Other stress factors were not statistically significant. They speculate that the stress of abuse may alter the secretion of the stress hormone cortisol, leading to a constriction of the airways.
Celedón emphasises that it is important to study Hispanic groups separately: while Puerto Ricans have the country's highest lifetime prevalence for asthma, at over 25%, Mexicans have the lowest, at just 10.
In the Times I read this http://www.timesonline.co.uk/tol/news/uk/a
The study suggests that some of the chemicals in smoke can permanently alter the DNA of those exposed to it in ways that can be inherited by smokers’ children, grandchildren and possibly subsequent generations too.
The researchers analysed asthma rates in both the children and grandchildren of women who smoked during pregnancy.
They found the grandchildren of such women had 2.1 times the normal risk of developing asthma. The children of women who smoked in pregnancy were 1.5 times more likely to develop asthma.
I've absolutely no information about the incidence of prevalence of asthma in children in Jersey. Asthma only appears in the recent Chief Medical Officer's report as a part of a general group of chronic illnesses. That section of the report focuses on the health implications of ageing populations, not childhood.
It could be that child abuse and smoking in pregnancy are unrelated factors that both independently affect asthma. It does to my mind however indicate that smoking in pregnancy could be interpreted as a form of abuse of the child. I can't help wondering what other seemingly unrelated medical problems might be caused or aggravated by abuse in childhood?
For more info on asthma and children, go to http://www.statistics.gov.uk/children/do
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