Researchers discovered a feedback loop between nerve cells, the immune system and the heart. They think it shows promise as a target for future therapies.

President Trump has been promising new "reciprocal tariffs" to punish other countries for their tariffs and trade barriers. Markets are nervous that a trade war could hike prices and hurt…

Sweeping cuts to mental health and addiction programs worth more than $2 billion are being reversed. After a political backlash from Republicans and Democrats, the grant money will be restored.