News Source: Science Daily
Source: American Thoracic Society
Date: May 21, 2007
Eating Apples And Fish During Pregnancy May Protect Against Childhood Asthma And Allergies
Science Daily — Women who eat apples and fish during pregnancy may reduce the risk of their children developing asthma or allergic disease, suggests a new study.
The SEATON study, conducted at the University of Aberdeen, UK, found that the children of mothers who ate the most apples were less likely to ever have wheezed or have doctor-confirmed asthma at the age of 5 years, compared to children of mothers who had the lowest apple consumption. Children of mothers who ate fish once or more a week were less likely to have had eczema than children of mothers who never ate fish.
The study did not find any protective effect against asthma or allergic diseases from many other foods, including vegetables, fruit juice, citrus or kiwi fruit, whole grain products, fat from dairy products or margarine or other low-fat spreads.
The researchers studied 1212 children born to women who had filled out food questionnaires during their pregnancy. When the children were 5 years old, the mothers filled out a questionnaire about the children's respiratory symptoms and allergies, as well as a questionnaire about their child's food consumption.
The children were also given lung function and allergy tests. Previous studies in the same children have found evidence for protective effects of vitamin E and D and zinc during pregnancy in reducing the risk of children's wheeze and asthma, notes researcher Saskia Willers, M.Sc. of Utrecht University in the Netherlands. If the new results are confirmed, she says, "recommendations on dietary modification during pregnancy may help to prevent childhood asthma and allergy."
Willers concludes that at least until age 5, a mother's diet during pregnancy might be more influential on a child's respiratory health than the child's own diet. She notes that further study of this group of children will be needed to see whether the association with the mothers' diet declines in older children, and if mothers' and their childrens' diets interact in older children.
Willers suggests that the beneficial effect of apples may come from powerful antioxidants called flavonoids, while fish's protective effect may come from omega-3 fatty acids, which other studies have suggested have a protective effect on the heart and may have a protective effect in asthma. "Other studies have looked at individual nutrients' effect on asthma in pregnancy, but our study looked at specific foods during pregnancy and the subsequent development of childhood asthma and allergies, which is quite new," Willers says. "Foods contain mixtures of nutrients that may contribute more than the sum of their parts."
Reference: Willers SM, Devereux G, Craig LCA, et al. Maternal Food Consumption During Pregnancy and Asthma, Respiratory and Atopic Symptoms in 5-Year-Old Children. Thorax; in press. This research was presented at the American Thoracic Society 2007 International Conference, on Sunday, May 20 (Session A105; Abstract 726; Poster Board # 901).
Note: This story has been adapted from a news release issued by American Thoracic Society.
In addition, an Op/Ed story published in The New York Times today might appear to be related:
News Source: The New York Times
May 21, 2007
Op-Ed Contributor
Death by Veganism
By NINA PLANCK
WHEN Crown Shakur died of starvation, he was 6 weeks old and weighed 3.5 pounds. His vegan parents, who fed him mainly soy milk and apple juice, were convicted in Atlanta recently of murder, involuntary manslaughter and cruelty.
This particular calamity — at least the third such conviction of vegan parents in four years — may be largely due to ignorance. But it should prompt frank discussion about nutrition.
I was once a vegan. But well before I became pregnant, I concluded that a vegan pregnancy was irresponsible. You cannot create and nourish a robust baby merely on foods from plants.
Indigenous cuisines offer clues about what humans, naturally omnivorous, need to survive, reproduce and grow: traditional vegetarian diets, as in India, invariably include dairy and eggs for complete protein, essential fats and vitamins. There are no vegan societies for a simple reason: a vegan diet is not adequate in the long run.
Protein deficiency is one danger of a vegan diet for babies. Nutritionists used to speak of proteins as “first class” (from meat, fish, eggs and milk) and “second class” (from plants), but today this is considered denigrating to vegetarians.
The fact remains, though, that humans prefer animal proteins and fats to cereals and tubers, because they contain all the essential amino acids needed for life in the right ratio. This is not true of plant proteins, which are inferior in quantity and quality — even soy.
A vegan diet may lack vitamin B12, found only in animal foods; usable vitamins A and D, found in meat, fish, eggs and butter; and necessary minerals like calcium and zinc. When babies are deprived of all these nutrients, they will suffer from retarded growth, rickets and nerve damage.
Responsible vegan parents know that breast milk is ideal. It contains many necessary components, including cholesterol (which babies use to make nerve cells) and countless immune and growth factors. When breastfeeding isn’t possible, soy milk and fruit juice, even in seemingly sufficient quantities, are not safe substitutes for a quality infant formula.
Yet even a breast-fed baby is at risk. Studies show that vegan breast milk lacks enough docosahexaenoic acid, or DHA, the omega-3 fat found in fatty fish. It is difficult to overstate the importance of DHA, vital as it is for eye and brain development.
A vegan diet is equally dangerous for weaned babies and toddlers, who need plenty of protein and calcium. Too often, vegans turn to soy, which actually inhibits growth and reduces absorption of protein and minerals. That’s why health officials in Britain, Canada and other countries express caution about soy for babies. (Not here, though — perhaps because our farm policy is so soy-friendly.)
Historically, diet honored tradition: we ate the foods that our mothers, and their mothers, ate. Now, your neighbor or sibling may be a meat-eater or vegetarian, may ferment his foods or eat them raw. This fragmentation of the American menu reflects admirable diversity and tolerance, but food is more important than fashion. Though it’s not politically correct to say so, all diets are not created equal.
An adult who was well-nourished in utero and in infancy may choose to get by on a vegan diet, but babies are built from protein, calcium, cholesterol and fish oil. Children fed only plants will not get the precious things they need to live and grow.
Nina Planck is the author of “Real Food: What to Eat and Why.”
Copyright 2007 The New York Times Company
Also of interest may be the following topic:
Breastfed babies become smarter adults.
In the topic linked above, I posted some preliminary research (in rodents) that might suggest that choline supplementation during pregnancy could potentially make offspring "smarter." I first heard of this effect in a webcast/talk given by Nick Boström in the following webcast:
Nick Boström on cognitive enhancement, webcast presentation at the Oxford conf.
http://streaming.oii...6/16032006-1.rm (excellent presentation, btw).
Skip forward approximately 12 minutes to hear Dr. Boström discuss choline supplementation in rats and the effect of maternal diet on offspring.
*Real Player is required to view this presentation.
Take care.
P.S. I changed the topic title to "supplements/diet in pregnancy" to make it more relevant. I hope no one objects. Peace.
Edited by adam_kamil, 21 May 2007 - 08:43 PM.
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