Published: Feb 26, 2014 3:56 PM EST
Updated: Feb 26, 2014 6:53 PM EST

FORT MYERS, Fla. - If you've ever struggled with your weight you've probably found yourself thinking, "what am I doing wrong?" Some scientists are now looking at the possibility that maybe you were born that way.

Are you ever frustrated that those delicious pastries go straight to your trouble spots, yet those same sweets seem to have no effect on the next person? If you've been struggling with your weight for years now we may have an answer: it's your genes.

Scientists at UCLA discovered so-called fat genes. Dr. Teresa Sievers in Estero tells us about the findings.

"This study definitely showed, that when you isolate the mice and give them all the genes associated with obesity... they are going to increase their fat mass above and beyond what they should," she explained.

Scientists discovered humans with these genes have a 20 to 30 percent greater chance of being obese. But it also found that diet and exercise are the best ways to combat obesity.
               
"The diet is playing a large role in it. We can't refute those findings," said Dr. Sievers.

In fact, in other studies, humans with the so-called fat genes who exercised, had a 30 percent reduction in weight. Sievers hopes future research will lead to more personalized treatments.

"Just like women who have the BRCA gene for breast cancer, they need to be screened at an early age because they're at a higher risk, the same thing with the fat gene if we get to that point," Dr. Sievers told us.

Doctor Sievers also said that kind of personalized treatment is probably five to ten years away.

Another thing this study shows is that all of our bodies are different and that we can't always rely on a one-size-fits-all approach to losing weight.