Dementia affects over 55 million people worldwide, with Alzheimer’s disease (AD) comprising most cases. Because curative therapies remain unavailable, there is an urgent need for prevention strategies that target modifiable risk factors. Behavioral interventions—particularly sleep improvement and physical activity—can independently benefit cognition, brain function, and cardiometabolic health, yet their combined (potentially s...

Purpose Long-acting formulations of the potent antiretroviral prodrug tenofovir alafenamide (TAF) hold potential as biomedical HIV prevention modalities. Here, we present a rigorous comparison of three animal models, C57BL/6 J mice, beagle dogs, and merino sheep for evaluating TAF implant pharmacokinetics (PKs). Methods Implants delivering TAF over a wide range of controlled release rates were tested in vitro and in mice and d...