Scientists exploring the South China Sea's Dragon Hole, a deep underwater sinkhole, discovered a thriving microbial world and ...

Nitric oxide doesn’t get the hype of collagen or NAD+, but it plays a central role in blood flow, energy, and how well the ...

"What is good for the heart is good for the brain," one researcher says.

Many people think that snoring is just a normal part of sleep. But for some, it can be a sign of a serious and often ignored ...

Neural tissue normally dies quickly without oxygen. Yet bird retinas—among the most energy-demanding tissues in the animal ...

The Arctic ground squirrel survives conditions that would cause irreparable brain damage in almost any other mammal on the ...

The discovery fundamentally changes the understanding of a structure in the avian eye that has been misinterpreted for centuries.

This article was reviewed by Felix Gussone, MD. Key Takeaways: Cholesterol is a key building block for testosterone. Through ...

This article was reviewed by Darragh O’Carroll, MD. Key Takeaways: Testosterone’s reputation for causing anger and aggression ...

Reduced blood flow to the brain is thought to be a key factor in many forms of dementia, including Alzheimer's, and ...

By Dr. Liji Thomas, MD A major UK study shows that commonly used home pulse oximeters can overestimate oxygen levels in ...