Nearly 16 million American adults have been diagnosed with attention deficit hyperactivity disorder (ADHD), but evidence suggests that more than 30 percent of them don’t respond well to stimulant medications like Ritalin and Adderall. A new clinical trial provides a surprising explanation for why this may be the case: There are individual differences in how our brains circuits are wired, including the chemical circuits responsible for memory and concentration, according to a new study co-led by the University of Maryland School of Medicine (UMSOM) and performed at the National Institutes of Health (NIH) Clinical Center.

When we move, it’s harder for existing wearable devices to accurately track our heart activity. But University of Missouri researchers found that a starfish’s five-arm shape helps solve this problem. Inspired by how a starfish flips itself over — shrinking one of its arms and using the others in a coordinated motion to right itself — Sicheng Chen and Zheng Yan in Mizzou’s College of Engineering and collaborators have created a starfish-shaped wearable device that tracks heart health in real time. Because the starfish-inspired device has multiple points touching the skin near the heart, it stays more stable than traditional wearables built as a single, unified structure, such as a smartwatch. This allows the device to collect clearer, more accurate heart data — even while someone is moving. The device conveniently pairs with a smartphone app to provide the user with health insights and help detect potential heart problems.

TB patients globally often incur "catastrophic costs" of up to $11,329 USD, despite many countries offering free treatment, with predominant drivers of cost being hospitalization and loss of income. 

Patients prescribed medicinal cannabis in Australia maintained improvements in overall health-related quality of life (HRQL), fatigue, and sleep disturbance across a one-year period, according to a study published April 2, 2025, in the open-access journal PLOS One by Margaret-Ann Tait from The University of Sydney, Australia, and colleagues. Anxiety, depression, insomnia, and pain also improved over time for those with corresponding health conditions.

In a small study of eight cats at early stages of pregnancy, researchers detected 19 different kinds of microplastic particles in fetuses from two cats and in the placentas of three cats. Ilaria Ferraboschi of the University of Parma, Italy, and colleagues present these findings in the open-access journal PLOS One on April 2, 2025.