Of all the ways stress reaches the body, one of the most striking shows up in the memory center of the brain.
What the research links
In older adults, sustained high levels of cortisol — the body’s main stress hormone — were associated with a smaller hippocampus and poorer memory (Lupien et al., Nature Neuroscience). The hippocampus is both essential for memory and one of the first regions affected in Alzheimer’s, which is why the stress–memory link draws so much attention.
The measurable part
Cortisol doesn’t stay in the brain — it’s measurable in blood, and it’s most telling read against DHEA-S, the body’s recovery hormone. That balance is a window into whether your stress system is recovering as fast as it’s taxed. It’s an association, not destiny — but it’s one you can actually see.
What mindspan measures
mindspan measures morning cortisol and DHEA-S together and reports their balance as a resilience index — the flagship metric of the Optimism Biology Report.
References
- Lupien SJ, et al. Cortisol levels during human aging predict hippocampal atrophy and memory deficits. Nature Neuroscience, 1998.
This article is for education and general wellbeing. It is not medical advice, diagnosis, or treatment, and does not replace your physician. mindspan is a wellness screen, not a diagnostic test.
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