A recent study published in the British Journal of Obstetrics and Gynaecology found that women who were overweight and in the top fifth of their BMI class at birth were six times more likely to suffer a birth injury than those who were thin and in between.
The study was based on data from the British National Birth Cohort, a national study that tracked the health of infants born between 1990 and 2004.
It also included data from over 1.2 million births in the United Kingdom and the United States.
According to the researchers, women who had the highest body mass index at birth, defined as a BMI of over 30, were four times more at risk of experiencing a birth accident than those in the middle of the range.
The results showed that those with a BMI above 18.5 were nearly three times more than those with an average BMI of 17.5 to 18.8.
That translates to an increased risk of injury of nearly three percent, and the study found that this increase was even higher for those who had had twins.
It also found that the higher a woman’s BMI, the more likely she was to experience an injury.
The higher her BMI, for example, the greater the risk of being injured in the first trimester of pregnancy.
The researchers also found an increased likelihood of an injury for overweight women who delivered a baby with a birth weight of over 4,500 grams, or a weight that is considered obese.
They found that these women were three times as likely to have an injury compared to those who delivered babies weighing under 1,000 grams.
These results indicate that obesity can increase the risk for injury in a woman, especially during labor and delivery, says Dr. Lisa Leung, an obstetrician-gynecologist and director of the Center for Obesity Research at the University of Texas Health Science Center at Houston.
Leung and her colleagues published their findings in the journal Obstet Gynecol.
What’s worse, it can also increase the likelihood of injury for babies who have been in a lower BMI category for some time.
This can lead to a more difficult birth experience and a more serious birth.
In addition to obesity, it is also a risk factor for other conditions that are not as well-studied.
For example, diabetes is also an underlying cause of birth injury, which is why the risk factors for diabetes and obesity are not well-known.
While it is not yet known what is causing the increased risk for birth injury in overweight women, Leung cautions that these risks are not limited to overweight women.
“If you have a history of obesity or diabetes, your risk is higher.
There’s a genetic component to the risk,” Leung says.
But she also cautions against blaming obesity on a woman who is overweight and not pregnant.
“You’re not going to solve this problem by just reducing weight,” Leulung says, “but by getting women to be more active and reducing their BMI.”
It is a topic that is hotly debated, with some women saying that their bodies are naturally designed to produce certain hormones and others arguing that the hormones themselves are not a factor.
Leung caution, however, that the increase in risk is due to factors beyond a woman.
For instance, it may be due to increased activity during pregnancy, or due to the weight of a baby that was born with a smaller head or abdomen.
“It’s very possible that there are many different factors at play,” Leunghaus says.
“We don’t know that the increased risks are entirely attributable to weight gain or weight loss.”
This is important, because the body is designed to be able to regulate hormones, Leulaus says, and obesity is one of those hormones.
If a woman does not have the right levels of insulin in her body, her body may not respond to the hormones properly and lead to the increased levels of the hormones.
That means that the body may also not be able or able to adequately regulate blood sugar and body fat.
While the increased birth injury risk for overweight babies may not seem to be an issue right now, the research shows that this problem is likely to become more serious as more and more women have babies at a younger age.