Polycyclic Compounds: News and Research on Pregnenediones

MeSH tree: D04.210.500.745.745.654

Rats may seek cannabis to cope with stress

It isn't just people—when given the chance, rats may also use cannabis to cope with stress, according to a study by researchers at Washington State University.

Priming for depression in a dimly lit world

St. Hedwig Hospital and Charité–Universitätsmedizin Berlin researchers report that repeated mornings spent under dim indoor light in healthy young adults raised afternoon and evening cortisol and reshaped sleep in ways known ...

Biomarkers link ER+ breast cancer to neighborhood poverty

Scientists have long known that Black women with estrogen-receptor positive breast cancer and those who live in disadvantaged neighborhoods often have more aggressive forms of the disease and poorer survival rates. However, ...

We are hardwired to sing, and it's good for us, too

On the first Sunday after being named leader of the Catholic Church in May 2025, Pope Leo XIV stood on the balcony of St. Peter's Basilica in Rome and addressed the tens of thousands of people gathered. Invoking tradition, ...

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