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Sweden leads health warning for obese mums

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Sweden leads health warning for obese mums
Most mums in Sweden are not overweight. Photo: Melker Dahlstrand/Image Bank Sweden
06:37 CEST+02:00
Fitness-consious Sweden has one of the lowest rates of obesity in Europe, but a study of more than 1.2 million children in the Nordic nation has warned that overweight mums are putting their offspring at risk of getting childhood diabetes.

Swedish researchers say that women who are obese during pregnancy may put their children at risk of getting type 1 diabetes, a condition that requires lifelong insulin therapy.

Their study of children born in Sweden between 1992 and 2004 and monitored for several years, found a 33-percent higher risk for the disease among children whose mothers were obese during the first trimester of pregnancy, but were not diabetic themselves.

"Maternal overweight and obesity in early pregnancy were associated with increased risk of type 1 diabetes in the offspring of parents without diabetes," a team wrote in Diabetologia, the journal of the European Association for the Study of Diabetes.

The highest risk was still for children of parents who had diabetes themselves, the study found. There was no additional risk for children of mothers who were obese on top of having diabetes.

Over 5,700 children from the study group were diagnosed with type 1 diabetes by 2009.

In a nation obsessed with exercise, less than 15 percent of Swedes are obese, but the proportion of Swedes who are overweight is growing and researchers hope the findings will be of global as well as national relevance.

Obesity has doubled worldwide since 1980. By 2014, more than 1.9 billion adults were overweight, of whom 600 million were obese, according to the World Health Organization.

Type 1 diabetes is usually found in children and young people – a chronic condition caused when the pancreas does not produce insulin to control blood sugar levels. It requires lifelong insulin treatment, and constitutes about 10 percent of all diabetes cases – though the number is growing.

The increase "may partly be explained by increasing prevalence of maternal overweight/obesity,” according to the new Swedish study.

People with a BMI (body weight index, a ratio of weight to height) of 25 and higher are classified overweight, and 30 and over obese.

Type 2 diabetes is much more common than type 1, and is believed to be caused by lifestyle factors, and controlled through healthy diet, exercise and medication.

"Prevention of overweight and obesity in women of reproductive age may contribute to a decreased incidence of type 1 diabetes," the study concluded.

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