Anxious pregnant women are more likely to have asthmatic children

Apr 15, 2009
Anxious pregnant women are more likely to have asthmatic children

(PhysOrg.com) -- Pregnant women who are stressed, particularly late in pregnancy, have an increased risk of their child going on to develop asthma, according to the latest research from Children of the 90s.

Asthma, affects around one child in every 10 and, although the causes of this respiratory condition are not yet entirely clear, it’s known that exacerbations (attacks) can be triggered by both physiological and emotional factors.

Children of the 90s monitored over 5,800 families and found that, in the group of ‘very anxious’ pregnant - 16 per cent went on to have children who developed asthma. That compares to just 10 per cent of children born to the ‘least anxious’ women. So, those who are very anxious in pregnancy, are 60 per cent more likely to have a child who later develops asthma than with a lower level of .

The research, published in the latest edition of the Journal of Allergy and Clinical Immunology, test the hypothesis that mothers’ anxiety during pregnancy is associated with asthma later developing in their children.

Researcher Dr John Henderson explained that maternal anxiety symptoms during pregnancy were positively associated with asthma in their children at age seven and a half years, raising the possibility that there may be a cause-effect relationship. Women who reported anxiety and were evaluated during the pregnancy and after .

Although the mechanisms behind the relationship are not understood, it is speculated that increases in a woman’s stress hormone, cortisol, during pregnancy may affect programming of the baby’s adrenal functions or immune development.

Maternal anxiety was assessed by self-completion questionnaires that the mothers filled in at 18 and 32 weeks of pregnancy. On the basis of the responses, the researchers were able to divide the women into four groups with different levels of anxiety.

Their children were assessed for asthma at the age of seven and a half, using questionnaires completed by the mothers and bronchial hyperreactivity measurements. Skin prick tests were used to see whether a subject’s asthma was associated with allergies.

Almost 13 per cent of the children were found to have asthma. As expected, researchers confirmed a strong connection between maternal anxiety at 18 and, particularly 32 weeks of pregnancy and asthma in children aged seven and a half.

Future studies should be done to better understand these mechanisms. While enough is not known yet to recommend specific actions to prevent asthma, the authors suggest that reducing anxiety and distress during pregnancy could be helpful.

More information: Mothers' anxiety during is associated with asthma in their by Hannah Cookson, Raquel Granell, Carol Joinson, Yoav Ben-Shlomo, A. John Henderson, The Journal of Allergy and Clinical Immunology April 2009 (Vol. 123, Issue 4, Pages 847-853.e11) http://www.jacionline.org/

Provided by University of Bristol (news : web)

Explore further: US orders farms to report pig virus infections

add to favorites email to friend print save as pdf

Related Stories

Recommended for you

US orders farms to report pig virus infections

11 hours ago

The U.S. government is starting a new program to help monitor and possibly control the spread of a virus that has killed millions of pigs since showing up in the country last year.

Foreigner dies of MERS in Saudi

12 hours ago

A foreigner has died after she contracted MERS in the Saudi capital, the health ministry said on announced Friday, bringing the nationwide death toll to 73.

Vietnam battles fatal measles outbreak

15 hours ago

Vietnam is scrambling to contain a deadly outbreak of measles that has killed more than 100 people, mostly young children, and infected thousands more this year, the government said Friday.

New clues on tissue scarring in scleroderma

16 hours ago

A discovery by Northwestern Medicine scientists could lead to potential new treatments for breaking the cycle of tissue scarring in people with scleroderma.

User comments : 0

More news stories

Treating depression in Parkinson's patients

A group of scientists from the University of Kentucky College of Medicine and the Sanders-Brown Center on Aging has found interesting new information in a study on depression and neuropsychological function in Parkinson's ...

Impact glass stores biodata for millions of years

(Phys.org) —Bits of plant life encapsulated in molten glass by asteroid and comet impacts millions of years ago give geologists information about climate and life forms on the ancient Earth. Scientists ...