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Growing Brains, Shrinking Risk of Dementia: Study Reveals Larger Brains Linked to Healthier Aging

BySamantha Jones

Mar 27, 2024
Researchers discover that human brains are growing bigger each generation

A study led by the University of California Davis Health has revealed that human brains have been growing over the years, indicating that larger brains may help stave off dementia as people age. The researchers examined MRIs of individuals born from the 1930s to the 1970s and found that babies born in the 1970s had nearly 15 percent more brain surface area and 6.6 percent more brain volume than those born in the 1930s. The study used MRI data from the Framingham Heart Study, which has been ongoing since 1948, and included brain scans from 3,226 subjects.

The study also observed growth in parts of the brain associated with memory and learning. While the implications of these larger brains are still uncertain in terms of intelligence, researchers believe that having a larger brain could be beneficial for brain health. Despite an increase in the number of Alzheimer’s disease patients with aging population, the percentage of newly diagnosed individuals has actually decreased per decade based on a study published in 2016 in the New England Journal of Medicine, which also analyzed data from the Framingham Heart Study.

Charles DeCarli, UC Davis professor of neurology and study first author, suggested that larger brain structures may reflect improved brain development and health, creating a larger brain reserve that could potentially protect against age-related brain diseases like Alzheimer’s and related dementias. The research findings hint at a potential link between brain size and brain health, suggesting that having a bigger brain could be advantageous when it comes to age-related cognitive decline.

By Samantha Jones

As a dedicated content writer at newszxcv.com, I bring a passion for storytelling and a keen eye for detail to every piece I create. With a background in journalism and a love for crafting engaging narratives, I strive to deliver informative and captivating content that resonates with our readers. Whether I'm covering breaking news or delving into in-depth features, my goal is to inform, entertain, and inspire through the power of words. Join me on this journey as we explore the ever-evolving world of news together.

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