This forceful contraction narrows the artery and sharply reduces blood flow. A vasospasm in the brain or the heart can block blood flow and raise the risk of stroke or heart attack.

Optimized enrichment of murine blood–brain barrier vessels with a critical focus on network hierarchy in post-collection analysis Hanaa Abdelazim Audra Barnes John C. Chappell ...

When you get out of the cold water, your blood vessels open up (known as vasodilation), Dr. Leary says. This allows oxygen- and nutrient-rich blood to return to your tissues to help remove waste ...

Major new analysis from the Thrombotic Thrombocytopenia Syndrome (TTS) Consortium has provided critical insights into the ...

There are more than 100,000 people on organ transplant lists in the U.S., some of whom will wait years to receive one – and some may not survive the wait. Even with a good match, there is a ...

What happens inside your body when you're tired, out of breath, or oxygen-deprived? A new study by researchers at the ...

Renal artery stenosis can lead to high blood pressure and kidney damage. Learn about its symptoms, causes, diagnosis, and treatment approaches.

Elevated blood pressure or hypertension in early midlife is associated with a heightened risk for increased arterial stiffness nearly three decades later in women, but not in men.

Blood clots can be extremely dangerous, potentially blocking oxygen from vital organs including the lungs and brain. One surgical treatment involves using suction to remove them from blood vessels ...

On the heels of STRIDE, one of the first trials to show glucagon-like peptide-1 (GLP-1) receptor agonists can help patients with PAD, a retrospective study of more than 100,000 patients provides more ...

Peripheral cyanosis: This is a blue or purple discoloration in the extremities, especially in fingernails, fingers, and toes. Peripheral cyanosis is typically caused by circulation problems, which ...