The Gene and Obesity

To be overweight as a child is might be due to your genes than your lifestyle, revealed in a study.



The researcher from the university college London examined more than 5,000 pairs of identical and non-identical twins. And also the study found that differences in body mass index and waist size were 77% governed by genes



Despite of genes, a balanced diet and exercise were vital to good health, said by an anti-obesity group. Children who are overweight are likely to be overweight or obese in adulthood, raising the risk of certain cancers, heart disease, stroke and diabetes later in life.



It’s totally wrong to blame a child's excessive weight gain on the parents - it is more likely to be due to the child's genetic susceptibility. But, despite the emergence of some possible genes that contribute to obesity, there is still debate as to the extent to which we are pre-programmed to be overweight by our genetic makeup. The studies on twins are a good way to test how far our genes or our environment influence our development. Identical twins have exactly the same genes, while non-identical twins are genetically different, like brother and sister.



The twins can be assumed to have roughly similar upbringing in terms of food, nevertheless, they were born at the same time, and raised in the same household. All these minute things gives permission to the scientists to measure differences in weight and calculate how much of that differences can be blamed on environment.



This allows scientists to measure differences in weight and calculate how much of that difference can be blamed on environment, and how much on genes, even though it doesn't identify individual genes which might be linked to obesity. They worked out that the effect of a bad environment was far less marked than the effect of a child's genes. "It is wrong to place all the blame for a child's excessive weight gains on the parents - it is more likely to be due to the child's genetic susceptibility. These results do not mean that a child with a high complement of susceptibility genes will inevitably become overweight, but that their genetic endowment gives them a stronger predisposition,” said by Professor Jane Wardle, who led the study



A member from The Child Growth Foundation, Tam Fry said that it was vital that parents did not give up on healthy lifestyles. The gene pool hasn't changed so dramatically in the last 30 years, at a time when obesity has grown out of sight. He added, “Even if someone has a gene which predisposes them to obesity, it doesn't mean they will become obese if they work hard to eat healthily, and take more exercise to burn off those calories."



The parents of children showing early weight gain should have additional support to keep them healthy said by Sara Hiom, from Cancer Research UK.



"We know that obesity is an important risk factor for a number of cancers so it is important for us all to do what we can to reduce our risk of the disease by eating healthily and maintaining an active lifestyle, " added by Himon.



The US scientists said according to their separate study that, they had found clear signs that obesity was "hard-wired" into the brain at birth. Differences in the brains of obesity-prone rats could be spotted just weeks after birth.



Obesity found in a child from the birth only due to the differentiation in gene.



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