Rivers, streams, lakes, and reservoirs aren't just scenic parts of our landscape—they're also vital engines for life on Earth ...

Rivers, streams, lakes, and reservoirs aren't just scenic parts of our landscape -- they're also vital engines for life on Earth. These inland waters 'breathe' oxygen, just like we do. But a new study ...

There are certain infections and chronic health conditions that may reduce blood oxygen levels to dangerously low levels. Causes and symptoms of low blood oxygen levels Some of the most common ...

There are many different types and causes of ... is when you have low levels of red blood cells. When this happens, your organs and tissues have a harder time getting oxygen.

Medically reviewed by Oliver Eng, MDCancer can be a cause of low hemoglobin (anemia), and is often seen with cancer types ...

Medically reviewed by Anju Goel, MD Iron is an essential trace mineral in foods like lean meats, poultry, nuts, seeds, and ...

Analysis of the sediment in Belize’s Great Blue Hole shows a concerning trend. Blue holes, the name for collapsed limestone ...

Morning nausea or sickness can be a sign of pregnancy, but there are other possible causes of feeling nauseous in the morning. These include low blood sugar, dehydration, anxiety, and more.

A recent study finds most critically injured patients can recover with less supplemental oxygen than has previously been suggested.

Amanda was placed on oxygen (which when not balanced causes all problems related to a ... The problem was attributed to prematurity and low birth weight. Hundreds of preterm babies develop ROP ...