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Cardiologists at hospitals in Germany and Poland asked people with atrial fibrillation to agree to something unusual: an operation that might turn out to be a performance. Of the 262 who consented,…
The headline you may have seen this week almost writes itself: lab-grown sperm. It is worth resisting, because the cells that a University of Pennsylvania team actually grew are not sperm. They are…
The message goes out at two in the morning, to the one thing that always answers. Not a friend, not a crisis line: a chatbot. It replies in seconds, never sounds tired, and does not judge. That is a…
For decades, the story of Alzheimer's has been told from the outside in: sticky plaques between neurons, tangled fibers within them, a slow siege on the brain's wiring. But the plaques and tangles…
Inside the nucleus of a healthy human cell sit a handful of droplets so small they were only named this century. They have no membrane. They condense out of the surrounding soup the way oil beads in…
The usual story about antibiotic resistance ends with a plea for new drugs, and the pipeline for those is famously thin. A study out of two American labs points at a different move: not inventing a…
For the family of the older child, the milestone was not measured in laboratory readouts. It was watching a 14-year-old, after years of severe seizures and developmental delay, get up and walk across…
The dream repeats. For many people with post-traumatic stress disorder it is the same dream, most nights, for years, and the exhaustion it produces feeds back into everything else: the depression,…
In 1991 the Medical Research Council stopped a trial early. Women who had already carried one pregnancy affected by a neural tube defect were given either folic acid or a placebo before trying to…
The lesions were the easy part. For more than a decade, biologists had watched brown bullhead catfish in Lake Memphremagog turn up with patches of blackened, malignant skin; by 2014, nearly one in…
Borderline personality disorder is one of the most stigmatized diagnoses in psychiatry, and one of the least often described in terms of biology. People living with it experience intense, unstable…