Beta blockers can sometimes cause chest pain, usually through withdrawal, low heart rate, or airway tightening. Here's how to tell what might be going on.
Atherosclerosis is the main driver of ischemic heart disease. Learn how plaque builds up, what triggers it, and why the process often begins earlier than you'd expect.
DNA polymerase always builds new strands in the 5' to 3' direction — here's what that means and why it shapes everything from replication to proofreading.