NEW YORK (Reuters Health) - young adults by caesarean section born are more obese than vaginal, delivered are proposed C sections that obesity epidemic could be feeding, researchers have found.
But the theory is controversial. An expert warned that scientists are still a long way from the expanding waist pinning on higher rates of C sections.
In the new study, Brazilian researchers, found that among more than 2,000 23 - to 25-year, 15 percent of those polled delivered via c section obese compared to 10 percent of people who were born naturally.
The team saw a number of other factors that could explain the connection may, how serious birth weight or income and level of education (more educated mothers had a higher rate of the c section).
Remained linked even after taking into account these factors, (c) section a 58% increase in the risk of adult obesity, according to Dr. Helena Goldani and colleagues.
The results prove cause and effect, Goldani, the Universidade Federal Rio Grande do Sul in Porto Alegre, told Reuters Health in an e-Mail. And there could be other explanations for the statement, she said.
Still, it is possible that C sections obese later directly could affect risk in the life, the researchers speculate.
This is because babies born via c section not the beneficial bacteria in the birth canal are exposed, and so they accumulate Bifidobacteria and other microbes, which could affect their metabolism may be longer.
In a similar manner tend to hummocky adults have less of these friendly bacteria in her stomach and digestive tract content than normal weight people do.
A researcher of the study not involved, said that while the theory "interesting", offers no evidence this study to do so, due to have C sections.
"I think all they have shown, is an association." You have not shown any mechanism or cause and effect, "said Dr. Xavier PI-Sunyer, Director of the New York Obesity Research Center at St. Luke's Hospital."
A major weakness, he told Reuters Health, is that the study had no information about mothers weight.
Obese women are more than thin women need a c section. They are also more likely to have overweight or obese children.
"This is a huge gap in the data," said PI Sunyer.
He mentioned, however, that other researchers, to the question why obese people tend to look, have a different composition of bacteria in the gut as thinner people.
One theory is that the change of intestinal bacteria in the first place is and contributes to the obesity by causing burn people of fewer calories and more fat is stored.
If this is the case remains however unknown, and the role of C sections is even less clear.
"This is an interesting finding," said PI Sunyer. "But it raises more questions than it answers, and it requires much more research."
He said that future studies are more "confusion" factors, such as mothers weight and pregnancy-related diabetes, indicating whether the connection between obesity real and C sections.
Goldani agreed that further studies abroad including studies, the newborn then you follow intestinal bacteria to measure them in the course of time, weight changes table required are-.
Brazil has one which long had highest (c) section in the world. 2,057 Adults in this study, who were born in the late 1970s, 32 percent of c section were born. It is now estimated that C sections in 44 percent of Brazilian births, many of them intended be are unnecessary for medical.
The c section is also high in the United States, where it accounts for about 33 per cent of births.
"An underlying message in this (report) seems that it undergo fewer C sections," said PI Sunyer.
That he, but not be added, it can do something to solve the problem of obesity because.
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