#PNAS

A landmark international study published this week in the Proceedings of the National Academy of Sciences (PNAS) is turning conventional wisdom about obesity on its head, revealing that a sedentary lifestyle in wealthy nations may not be the main culprit behind soaring obesity rates. Instead, the research finds that diets high in ultra-processed foods are the leading driver of the modern obesity epidemic, with important lessons for the Thai population and global public health campaigns alike (Washington Post).

A groundbreaking international study has toppled one of the most persistent beliefs about obesity: the idea that sedentary lifestyles in wealthy countries are chiefly to blame for the global epidemic of excess weight. Instead, new research published this week in the prestigious Proceedings of the National Academy of Sciences (PNAS) points squarely at what we eat—particularly the prevalence of ultra-processed foods—as the dominant cause of rising obesity rates around the world (Washington Post).

A major international study is upending deeply held beliefs about obesity, concluding that excess calorie consumption—not a lack of physical activity—is the primary cause of the obesity epidemic in the United States and other developed nations. The findings, published in the Proceedings of the National Academy of Sciences (PNAS) this week, suggest that decades of public health campaigns blaming sedentary behavior for rising obesity rates may be missing the real culprit: modern diets.

Groundbreaking research published in the Proceedings of the National Academy of Sciences (PNAS) has uncovered compelling evidence that ordinary people unconsciously contribute to the growth of their own information bubbles, simply through the way they type search queries online. This large-scale study, encompassing 21 experiments and nearly 10,000 participants, demonstrates that even without any intent to seek confirmation, our habitual online search patterns—and the algorithms designed to respond to them—subtly guide us towards ever-narrower realities. These findings have huge implications for how Thais access information, understand national debates, and engage with global topics in a time when digital literacy is crucial for an informed society (PsyPost).

A groundbreaking new study from scientists at Mass General Brigham, published in the prestigious journal Proceedings of the National Academy of Sciences, confirms what many Thais intuitively believe: childhood experiences—both good and bad—can lead to enduring changes in the very structure of a child’s brain, with effects that last well into adolescence and likely adulthood. Researchers have revealed that challenges in early life, such as economic hardship or family adversity, are linked to weaker “white matter” connections throughout the brain, reducing cognitive abilities like language and mathematics years later. Yet, in a hopeful twist, children who experience resilience—especially through strong relationships and supportive communities—show stronger brain development and improved academic outcomes, despite adversity. These findings carry deep implications for Thai policymakers, families, and schools, underscoring the importance of investing in nurturing environments from the earliest years of life (source, source, source).