Research Topic: sex differences

Sex-specific effects of psychedelic drug exposure on central amygdala reactivity and behavioral responding

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Researchers studied how psilocybin’s active form affects the brain’s fear center in both male and female rats. They found that a single dose produced different effects in males versus females, with males showing lasting reductions in fear responses over 28 days while females showed variable changes. These findings help explain why psychedelics might work differently between sexes and could inform how they’re used to treat anxiety and depression in humans.

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Sex-Specific Associations Between Prebiotic Supplement Intake and Sarcopenia Risk: Evidence From NHANES

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This study examined whether taking prebiotic supplements helps prevent sarcopenia (age-related muscle loss) differently in men versus women using health data from thousands of Americans. Researchers found that women who consumed prebiotics had significantly lower rates of sarcopenia, while this benefit was not observed in men. These findings suggest that prebiotic supplements may be particularly beneficial for women’s muscle health, though more research is needed to understand why this sex difference exists.

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Reelin cells and sex-dependent synaptopathology in autism following postnatal immune activation

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Researchers found that infections in newborn mice, particularly males, can disrupt brain development and lead to autism-like behaviors by damaging special brain cells called Reelin+ cells that help synapses mature properly. These damaged synapses failed to develop normally, resulting in social withdrawal and repetitive behaviors similar to autism in humans. Importantly, the study found that male mice were much more susceptible to this immune-triggered damage than female mice. The findings suggest that Reelin could be a promising therapeutic target for treating autism in children who experienced infections early in life.

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