5. Stress Can Make Your Brain Shrink
One recent study involving monkeys found that after six months of exposure to high stress levels, the monkeys’ brains actually reduced in size. The study’s findings were replicated in another research project involving rats, in which the hippocampus shrunk when the vermin were exposed to high levels of survival-related stress. Researchers theorize that in humans, people suffering from posttraumatic stress disorder (PTSD) could experience reductions in brain mass.
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