Women who eat fast food take longer to become pregnant
Dec 07, 2018 04:24 PM EST | By Staff Reporter
Women who eat less fruit and more fast food take longer to get pregnant and are less likely to conceive within a year, according to a study by researchers at the University of Adelaide's Robinson Research Institute.
The study published today (Friday 4 May) in Human Reproduction, one of the world's leading reproductive medicine journals, asked 5598 women in Australia, New Zealand, the UK and Ireland about their diet. The women, who had not had a baby before, were interviewed by research midwives during their first antenatal visit.
Professor Claire Roberts, Lloyd Cox Professorial Research Fellow, from the University's Robinson Research Institute, who led the study, said: "The findings show that eating a good quality diet that includes fruit and minimising fast food consumption improves fertility and reduces the time it takes to get pregnant."
Compared to women who ate fruit three or more times a day in the month before conception, women who ate fruit less than one to three times a month took half a month longer to become pregnant. Similarly, compared to women who never or rarely ate fast food, women who consumed fast food four or more times a week took nearly a month longer to become pregnant.
Among all the couples in the study, 468 (8%) couples were classified as infertile (defined as taking longer than a year to conceive) and 2204 (39%) conceived within a month. When the researchers looked at the impact of diet on infertility, they found that in women with the lowest intake of fruit, the risk of infertility increased from 8% to 12%, and in those who ate fast food four or more times a week, the risk of infertility increased from 8% to 16%.
First author Dr Jessica Grieger, post-doctoral research fellow at the University of Adelaide, said: "We recommend that women who want to become pregnant should align their dietary intakes towards national dietary recommendations for pregnancy. Our data shows that frequent consumption of fast foods delays time to pregnancy."
Previous research has tended to focus on the role that diet plays in women diagnosed with or receiving treatment for infertility; the impact of maternal diet before conception in the general population has not been widely studied. This research was carried out in women recruited to the multi-centre Screening for Pregnancy Endpoints (SCOPE) study between 2004 and 2011. Of the 5598 women, the majority (5258, 94%) received no fertility treatments before conception and 340 did.
During the first antenatal visit at around 14-16 weeks' gestation, midwives collected information about the time it took to become pregnant and the women's diet. This included details of their diet in the month before conception, and how frequently they consumed fruit, green leafy vegetables, fish and fast foods. Fast foods included burgers, pizza, fried chicken and chips that were bought from take-away or fast food outlets. Fast foods eaten at home (bought from supermarkets, for example) were not included in the data collected and so consumption of this type of food is likely to be under-reported.
Couples were excluded from the analysis if they were receiving fertility treatment due to the male partner's infertility.
Dr Grieger said: "Most of the women did not have a history of infertility. We adjusted the relationships with pre-pregnancy diet to take account of several factors known to increase the risk of infertility, including elevated body mass index [BMI] and maternal age, smoking and alcohol intake. As diet is a modifiable factor, our findings underscore the importance of considering preconception diet to support timely conception for women planning pregnancy."
The researchers also found that while intake of fruit and fast foods affected time to pregnancy, pre-pregnancy intake of green leafy vegetables or fish did not.
Limitations of the study include the fact that collecting data on pre-pregnancy diet relied on retrospective recall and included a limited range of foods. Information on the fathers' diet was not collected, and it is possible that other, unknown factors might have affected the results. A major strength is the large group of women included in the study.
"For any dietary intake assessment, one needs to use some caution regarding whether participant recall is an accurate reflection of dietary intake. However, given that many women do not change their diet from pre-pregnancy to during pregnancy, we believe that the women's recall of their diet one month prior to pregnancy is likely to be reasonably accurate," said Dr Grieger.
The researchers are continuing their work and plan to identify particular dietary patterns, rather than individual food groups, that may be associated with how long it takes women to become pregnant.
Soups are a classic choice for warming up on a cold winter's night. We don't often appreciate its value as summer fare, though. However, there's actually some fantastic soups perfect for the lighter, warmer season.
Most people love an order of fries, but how they enjoy those fries does indeed vary. Whether skinny or thick, spicy or curly or covered in truffle salt or a mix of herbs, it's a sure hit at any dinner table. Even the most classic of fun favorites though can be improved upon and some spots around the country are doing exciting things with their fries!
Rosé wine is made in almost every region in the world, from many different grape varieties. And rose-colored wine is produced in a sweet, dry, sparkling, and even fortified style. Yet the classic style of dry rosé wine from Provence sets the trend that many other wine-producing regions around the world want to emulate.
Dominique Ansel moved from Paris to New York City to work at Daniel Boulud's French flagship Daniel as the executive pastry chef, a position he held for 6 years. Fast forward 15 years later, and Ansel has become a household name after the invention of a certain croissant-donut hybrid, and his namesake bakery has expanded beyond SoHo to include branches around the world.
As if you ever really need an excuse to order a piña colada, today is National Piña Colada Day, so go ahead and order that creamy, sweet, cocktail-meets-dessert libation that is best served on a sunny, tropical beach somewhere exotic.
The cold brisk wind whips through the streets on an early spring evening in Prague. As temperatures hover around freezing, only one dish warms the soul this evening. Upon opening the door to Krčma the smell of comfort greets us like warm blanket-braised meat, baking spices, simmering herbs, and fried potatoes.