Some diseases are so rare that even figuring out how to diagnose them can be tricky. The discovery of a gene for an extremely rare blood disorder could help make it easier to diagnose through DNA testing.

Evolutionary clues have led scientists to a discovery of how a key clotting protein assembles. This could aid in better understanding, and possibly treatments for common bleeding disorders.

Compared to any number of dangerous situations someone can find themselves in, driving a car fueled by diesel hardly seems risky. But exhaust fumes may be deceptively nipping at heart health.

Patients with acute coronary syndromes often must resort to stents or balloon angioplasty to relieve artery constriction. Now the European Society of Cardiology is suggesting new strategies to minimize bleeding during such procedures.