A Simple Saliva Test Could Offer Clues About Brain Aging

<a href="https://scitechdaily.com/a-simple-saliva-test-could-offer-clues-about-brain-aging/" title="A Simple Saliva Test Could Offer Clues About Brain Aging" rel="nofollow"><img width="777" height="518" src="https://scitechdaily.com/images/Mouth-Saliva-Test-777x518.jpg" class="webfeedsFeaturedVisual wp-post-image" alt="Mouth Saliva Test" style="display: block; margin: auto; margin-bottom: 5px;max-width: 100%;" link_thumbnail="1" decoding="async" srcset="https://scitechdaily.com/images/Mouth-Saliva-Test-777x518.jpg 777w, https://scitechdaily.com/images/Mouth-Saliva-Test-400x267.jpg 400w, https://scitechdaily.com/images/Mouth-Saliva-Test-768x512.jpg 768w, https://scitechdaily.com/images/Mouth-Saliva-Test-1536x1024.jpg 1536w, https://scitechdaily.com/images/Mouth-Saliva-Test.jpg 2000w" sizes="(max-width: 777px) 100vw, 777px" /></a>Consistently high and irregular levels of the stress hormone cortisol are linked to faster cognitive decline in older adults. Releasing the hormone cortisol is the human body’s natural way of responding to stress. Because cortisol can cross the blood-brain barrier and bind to receptors in regions responsible for cognition, researchers have long suspected that chronic [...]