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Vagus Nerve Stimulation Could Help New Skills Stick
Stimulating the vagus nerve after practice helped mice develop stronger long-term motor learning, revealing a potentially important window when the brain is still locking in a new skill. The effect was linked to rhythmic changes in brain blood vessels, hinting that body-to-brain signals may help prepare the brain for lasting change.
Scientists discover a human brain gene that can jump through DNA
Scientists have discovered a human gene with a remarkable double life: it appears to play an important role in brain cells while still retaining the ability to jump around the genome. Called BC200, the gene evolved millions of years ago from a mobile piece of DNA known as a transposon, but unlike most genes that arose this way, it never lost its mobility. Researchers even found BC200 embedded inside a human poxvirus, suggesting it may have jumped from infected skin cells into the virus.
Cancer-fighting t cells burn out. Scientists may have found a fix
Cancer immunotherapy can lose its punch when tumor-fighting T cells become exhausted, but researchers may have found a way to keep them going longer. Scientists at Memorial Sloan Kettering Cancer Center identified a signaling molecule called MEK that can push T cells to burn through their energy while producing cancer-killing proteins. In animal and laboratory studies, blocking MEK helped the cells conserve energy, survive longer, and remain active even in the harsh environment around tumors.

From floating saunas to clinical trials: How heat might help mental health
While scientists have a decent understanding of how sauna and other forms of heat exposure exercises our cardiovascular system, they know relatively little about its impact on mental health.

Republicans and Democrats find a unifying target: Pharmacy benefit managers
Republicans and Democrats, both patients and politicians, seem united in their disdain for the healthcare companies known as pharmacy benefit managers. Tennessee and Arkansas are regulating them now.
From floating saunas to clinical trials: How heat might help mental health
Many people are turning to sauna because of its benefits for their mental health. While scientists have a decent understanding of how sauna — and other forms of heat exposure — exercises our cardiovascular system, they know relatively little about its impact on depression, anxiety and mood. But more studies are being done to understand this connection and why heat appears to act as a powerful antidepressant. NPR's Will Stone visits a "floating sauna village" in Oslo where a husband-wife team are conducting one of the first trials on the link between sauna and mental health — and talks to one of the leading researchers in the U.S about her efforts to study this. Morning Edition consumer health segment for October 5