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Any diet regimen that can be applicable to one person may not work for another.

Scientists at the University of Texas at Austin explain that in five years, doctors might build up diets that are customised to a patient's genes.

"When people hear that genes may be playing a role in their weight loss success, they don't say, 'Oh great, I just won't exercise anymore',said Molly Bray, a geneticist and professor of nutritional sciences at the University of Texas Austin, in a news release. "They actually say 'Oh thank you. Finally someone acknowledges that it's harder work for me than it is for others.' And then I think they're a little more forgiving of themselves, and they're more motivated to make a change."

Scientists examined genetic tests, genomic research and changes that involved weight fluctuations. They were able to identify some genes related to weight, yet the process or mechanism of weight gain has not exactly been identified.

They now hope that data on the mechanism of gaining or losing the pounds, and also understanding the whys and wherefores, such as "diet, physical activity and overall stress" can enable the scientists to work on future plans. They hope to combine their findings with genomic data involving computer algorithm, and also believe that the development of "analysis tools" might be near.

"I think within five years, we'll see people start to use a combination of genetic, behavioral and other sophisticated data to develop individualized weight management plans," said Bray.

The study is published in the journal Obesity.