Scientists have pioneered a new way to monitor sodium levels in the blood—without drawing a single drop. By combining terahertz radiation and optoacoustic detection, they created a non-invasive system ...

Looking for ways to help make life better—yes, this includes keeping hydrated. Reusable bottles are good for the planet and ...

Water fasting is not widely endorsed by modern medicine, so there's no official medical protocol for it. Some people choose to fast for 24 to 72 hours, or one to three days.