At the same time, the consumption of fruits, at least several times a day, seemed to increase the women's chances to get pregnant. Stay on top of breaking news stories with the ABC11 News AppFast-food was defined as items bought from fast-food restaurants and did not include items bought from supermarkets, such as pizza. "This new research supports the growing body of evidence that a nutritious diet is one of the most important strategies that a couple can employ to optimise their fertility", said Ms McGrice. The study of 6,000 women showed those who ate fast food at least four times a week took almost a month longer to become pregnant.
As per findings, the woman who fed more on fruit than junk food conceived earlier compared to those who ate junk food more and avoided regular fruits.
Experts say, women who want to get pregnant should follow a *healthy* diet and *limit* their trips to the drive through.
Intake of other foods, including green leafy vegetables and fish, weren't linked to risk of infertility or the amount of time it took women to get pregnant.
"Most of the women did not have a history of infertility".
"There was also an increase from 8 to 16 percent in the risk of infertility in women who ate four or more servings of fast food each week."
Researchers analyzed the diets of 5,598 women in Australia, New Zealand, Britain and Ireland from November 2004 to February 2011.
"A recent review on male diet and fertility markers indicated that higher intake of fruits and vegetables was associated with increased sperm motility whereas a higher intake of fat-rich foods and candies may decrease semen quality", the researchers wrote.
"The major finding is that the risk of infertility - that is, taking longer than 12 months to conceive - went from 8 percent for all the women in the cohort to 12 percent ... in women with the lowest fruit intake", said lead study author Claire Roberts, a senior research fellow at Robinson Research Institute at the University of Adelaide in Australia.
The findings also suggest that these women are less likely to conceive within one year.
"The specific dietary components of fast food and their relationship to fertility have not been studied in human pregnancies", the researchers wrote.
The study did benefit from a large sample of women across countries representative of the United Kingdom, but there were a number of limitations to consider.
Moving forward, the researchers recommend further research of a broader range of food and food groups.
Still, more than half of overweight or obese arthritis patients are not getting tips on diet and exercise that could improve their health.
The time it took to conceive was also only an estimate and may have been inaccurate.
Funding for the work came from the NHS, the Biotechnology and Biological Sciences Research Council, University of Manchester Proof of Concept Funding, Guy's and St Thomas' Charity, and Tommy's Charity.