The NHS Cumbria report found a strong link between lifestyles and unsuccessful pregnancies.
One in five mothers reviewed for the report had a body mass index (BMI) of more than 35, and a third of the mothers smoked during pregnancy.
In comparison, from the general maternity population, around one in ten mothers have a BMI of more than 35 and one in six smoke throughout their pregnancy.
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Clear start, patchy cloud at the east coast, some mist forming further west. Cool in the countryside
Some good sunny spells at first, especially in the west. Much brighter in the east than of late, just some patchy cloud around