Human Brains Are Getting Larger. What This Means for Dementia

Researchers from UC Davis Health conducted a study revealing a trend of increasing brain size among individuals born in later decades, with those born in the 1970s exhibiting significantly larger brain volumes and surface areas compared to those born in the 1930s. They suggest that this increase in brain size may lead to a greater brain reserve, potentially lowering the risk of age-related dementias. Published in JAMA Neurology, the study highlights the impact of birth decade on brain size and long-term brain health, indicating that external factors beyond genetics, such as health and education, may influence brain development. Utilizing MRI data from participants in the Framingham Heart Study spanning three generations, the research demonstrates consistent growth in various brain structures over decades, suggesting a potential correlation with improved brain health and a lower incidence of dementia despite the increasing aging population in America.


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The ideas expressed here are solely the opinions of the author and are not researched or verified by AGEIST LLC, or anyone associated with AGEIST LLC. This material should not be construed as medical advice or recommendation, it is for informational use only. We encourage all readers to discuss with your qualified practitioners the relevance of the application of any of these ideas to your life. The recommendations contained herein are not intended to diagnose, treat, cure or prevent any disease. You should always consult your physician or other qualified health provider before starting any new treatment or stopping any treatment that has been prescribed for you by your physician or other qualified health provider. Please call your doctor or 911 immediately if you think you may have a medical or psychiatric emergency.

Taylor Marks
Taylor Marks is a certified holistic health coach and professionally trained chef from The Institute of Culinary Education. Her passions include the latest research in health science, culinary arts, holistic wellness, and guiding others towards feeling their best.