SCIENTISTS say maintaining a normal weight and blood pressure and having a healthy diet can boost a woman's chances of an uncomplicated pregnancy.
Scientists from King's College London found that maintaining a normal weight and blood pressure and following a healthy diet could boost a woman's chances of an uncomplicated pregnancy.
More than 5600 first-time mothers from the UK, New Zealand, Australia and Ireland were monitored for the research, published in the British Medical Journal (BMJ).
The women, who were all having one baby, answered questions about their medical histories and diet.
They also had measurements taken, such as blood pressure, and underwent an ultrasound scan between 19 and 21 weeks. Details about the babies were also collected after birth.
Experts found that a healthy diet, including a high intake of fruit (at least three pieces a day) in the month leading up to conception, led to a higher chance the woman would have an uncomplicated pregnancy.
They also discovered that a healthy body mass index (BMI) and normal blood pressure boosted the chance there would be fewer problems.
Women who were in paid work when they were 15 weeks pregnant were also less likely to experience complications.
This could be because these women are less likely to abuse drugs and could be more likely to have an income which allows them to eat more healthily, the authors suggested.
While calling for further studies, the researchers said 24,674 more women a year could have an uncomplicated pregnancy if high blood pressure was brought under control.
Overall, 61 per cent of the women in the study had an uncomplicated pregnancy.
The most common reasons for a complicated pregnancy in the mother were high blood pressure (8 per cent) and pre-eclampsia (5 per cent).
In babies, the issues were being small for gestational age (11 per cent) and premature birth (4 per cent).
"We have always known that a mother's general health is important, but until now we did not know the specific factors that could be associated with a normal pregnancy," said Dr Lucy Chappell, lead author from the division of women's health at King's College London.
"Although this is an early study, these findings suggest that by leading a healthy lifestyle both before and during pregnancy - including eating lots of fruit and maintaining a healthy BMI - it could be possible for women to increase the likelihood of experiencing an uncomplicated pregnancy.
"More research needs to be done to explore these associations further but I hope that this research will help inform both public health policy makers and healthcare professionals giving advice to pregnant women and those thinking of having a baby."
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