Aging affects every part of the body — and the brain is no exception. But what exactly changes as we get older, and what does that mean for memory and thinking?
As we age, our brains shrink slightly in volume, particularly in areas involved in memory and decision-making, like the hippocampus and prefrontal cortex.¹ Communication between brain cells (neurons) slows down, and blood flow to the brain decreases, which can affect processing speed and attention.²
Another common change is the buildup of proteins, such as beta-amyloid and tau. These can interfere with how brain cells work and are linked to conditions like Alzheimer’s.³ However, not all older adults develop these buildups — and even those who do may not show symptoms right away.
The good news is that the aging brain remains remarkably adaptable. This ability, known as neuroplasticity, means we can continue to form new connections, learn new skills, and strengthen memory — even in our 60s, 70s, and beyond.⁴
So while brain aging is a natural process, it doesn’t mean inevitable decline. Staying mentally and physically active, getting good sleep, and managing chronic conditions can help your brain stay healthy for longer.
Sources:
- Fjell, A. M., & Walhovd, K. B. (2010). Structural brain changes in aging: courses, causes and cognitive consequences. Neuron.
- National Institute on Aging. (2020). Understanding the Aging Brain.
https://www.nia.nih.gov/news/understanding-aging-brain - Jack, C. R. et al. (2018). NIA-AA Research Framework: Toward a biological definition of Alzheimer’s disease. Alzheimer’s & Dementia.
Park, D. C., & Reuter-Lorenz, P. (2009). The adaptive brain: aging and neurocognitive scaffolding. Annual Review of Psychology.
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