Could a poop pill ease deadly lung pressure?

This early-stage study is testing whether transplanting healthy gut bacteria from donors can help control pulmonary arterial hypertension, a serious lung condition. Researchers will give 24 patients either the bacteria transplant capsules with fiber, the transplant alone, or a placebo, to see if it's safe and if the healthy bacteria take hold. The main goal is to check safety and see if the treatment changes markers of inflammation and heart function over 24 weeks.