Hundreds of babies are being born clinically obese every year - including some weighing more than a stone . As many as 1,403 newborns have been classified as obese since 2011 , according to shocking figures from a series of Freedom of Information requests . At just one trust nearly 400 babies born in the last four years weighed 9lb 15oz or more - the marker for an obese baby . Hundreds of babies are being born clinically obese every year including some weighing more than a stone , Freedom of Information requests have revealed ( stock image ) Peterborough and Stamford ­Hospitals Trust also recorded 280 exceptionally large babies and another 265 arrived at George Eliot Hospital NHS Trust in Warwickshire . There has also been an increase in the number of babies weighing 12lb or more . Seven clinics reported births of so-called 'sumo babies ' in 2013 - including two where the babies weighed more than a stone . Tam Fry , of the National Obesity Forum , said that although some mothers suffer from medical conditions , which increase the size of the baby , most just overeat . He said : 'Quite simply , the number of pregnant women who are obese at the start is increasing . 'It is thought that 82 per cent of children who are obese will continue to be overweight . 'As they have the same kind of nutrition as their parents there is a continuous upwards spiral . Danica Slavin ( second from right ) gave birth to two babies , Eva ( right ) and Jack ( left ) , who both weighed over 10lbs . They had to be delivered via caesarean at Jessop Wing maternity unit in Sheffield but are now happy and healthy . Eva ( above ) was born in 2013 and weighed 12lb 6oz - 5lb more than the average baby girl . One mother has given birth to two big babies in the last 18 months . Danica Slavin had her first daughter Eva Lily Margerrison in 2013 and was shocked when she weighed in at 12lb 6oz . But she was even more surprised when three weeks ago she gave birth to her son Jack , who , at 10lb 3oz , was nearly just as big . Both babies had to be delivered via caesarean at Jessop Wing maternity unit . The 21-year-old mother , from Sheffield , met her partner Sam Margerrison four years ago when they worked at fast-food chain Burger King . She said : ' I do n't know why Eva and Jack were so big because me and my partner Sam were n't big babies . ' I was tested for gestational diabetes with both babies but that was ruled out . ' I just had big babies . ' She explained that Jack was currently on formula and Eva enjoyed her fruit and vegetables . She also dismissed claims that the size of a baby at birth related to its parents . 'You obviously do n't expect a baby of that size , ' she said . 'Successive governments have not really addressed the obesity problem . It starts at conception and sometimes even before then . ' Mr Fry also suggested that the number of women having caesareans was increasing due to the increasing size of their babies . He said : 'Some babies are so fat they can not come out naturally . 'Women have to understand that they have to keep themselves in shape due to the huge responsibility they have of producing the next generation . 'If we get it wrong , it 's a vicious circle and it will just go on and on and on . ' Toddlers are also being hospitalised for being obese , with 28 two-year-olds and 33 three-year-olds admitted since 2011 , Laura Connor revealed in her Sunday Mirror investigation . Freedom of Information requests were sent to 153 hospital trusts in the country and received 110 replies . Calderdale and Huddersfield NHS Foundation Trust - 372 . Peterborough and Stamford Hospitals Trust - 280 . George Eliot Hospital NHS Trust - 265 . Bedford Hospital NHS Trust - 220 . London North West Healthcare NHS Trust - 165 . The average weight of a baby boy is 7lb 8oz and for a girl it is 7lb 4oz . Childhood obesity can lead to a number of medical problems including diabetes , heart disease , strokes and cancer . A Royal College of Midwives spokesman said : 'It starts pre-conceptually . If a woman is trying to get pregnant then she should already be eating healthily and not drinking or smoking . 'It is a common myth that the woman should eat for two . Really , she should be just taking in lots of vegetables and a balanced diet . 'Long walks and gentle jogs can also help . ' Tam Fry , of the National Obesity Forum , said : 'It is thought that 82 per cent of children who are obese will continue to be overweight '
As many as 1,403 newborns classified as obese since 2011 . An obese baby weighs 9lb 15oz or more - 2lb more than average . 110 hospital trusts replied to a Freedom of Information request .