If you’re feeling dizzy when you get up from sitting, or perhaps you feel faint and lightheaded, then it’s usually harmless. ...

Antarctica's "Blood Falls" glacier bleeds red water, and scientists found hidden pressure beneath the mysterious millennial ice.

High blood pressure can be a silent disease; people can have it without realizing it. Here are the lifestyle factors that can ...

Acute kidney injury (AKI) is a condition in which the kidneys suddenly lose their ability to filter waste from the blood. Developing within hours or days, AKI can cause dangerous waste accumulation ...

Learn how aneurysms develop, what symptoms to watch for, and how medical professionals treat weakened artery walls.

Many everyday prescriptions and over-the-counter drugs affect coordination, alertness, and blood pressure in ways that feel ...

She later learned she suffered a hypertensive crisis 1 — meaning she had an extreme and sudden spike in blood pressure. The ...

A once-nightly oral pill helped control obstructive sleep apnea in a large, Phase III clinical trial presented at the 2026 ...

Feeling dizzy, lightheaded, or suddenly blacking out may seem harmless in some situations, but doctors say fainting can ...

Learn more about the common causes of fainting and lightheadedness, including dehydration, low blood sugar, heart issues, flu ...

Medically reviewed by Christopher Lee, MD Key Takeaways Reducing stress can lower blood pressure within minutes.Chronic ...

Doctors have long known that talking during a reading, crossing your legs, using the wrong cuff size, or drinking caffeine ...