New Study Reveals Genetic Test Can Predict Childhood Obesity
A recent study has found that a genetic test can help determine if a child is likely to become obese in adulthood. Published in the journal Nature Medicine, the research shows that the risk of severe obesity can be identified as early as age 5 using a method called the polygenic risk score (PGS).
The PGS acts like a calculator, assessing various genetic factors that influence a person’s likelihood of becoming obese. This test can be done before any noticeable weight changes, aiding early efforts to prevent obesity, such as promoting healthier lifestyles in childhood.
Researchers from the University of Copenhagen’s Novo Nordisk Foundation Center for Basic Metabolic Research led the study, highlighting that the PGS is particularly effective in predicting adult obesity well before other weight influences take hold.
Roelof Smit, the study’s lead author, emphasized the importance of early intervention, stating that taking action at a young age can lead to significant changes in a child’s future health.
The study involved over 600 scientists from around the world and is based on genetic data from more than 5 million people. This large collaboration has created the most diverse genetic dataset available, making the PGS twice as effective as earlier tests at predicting obesity risk, covering about 17.6% of a child’s potential for developing a high body mass index (BMI) later on.
Ruth Loos, a co-author of the study, pointed out that this new method represents a major advancement in understanding obesity risk and may lead to practical genetic testing applications in healthcare.
Interestingly, researchers also found that children with a higher genetic risk are more responsive to lifestyle changes aimed at weight loss, though they may regain weight more quickly after such interventions.
However, it’s worth noting that the PGS is not without its limitations, as it tends to be more accurate for individuals of European descent compared to those of African descent.
As obesity rates continue to rise globally, this study provides a hopeful direction towards early prevention and intervention strategies.
