Sugar metabolism refers to the process by which the body breaks down carbohydrates into sugars, including glucose and fructose. The body uses these sugars as a source of energy. The body metabolizes ...

A night-shift worker finishes at dawn. Their phone says Tuesday, but their body feels like it's Monday. The body's internal ...

B12 shots work fast but don’t last long. Most leaves your body within a day, though some is stored in the liver. Regular injections may be necessary to maintain steady levels, especially if you have ...

New research shows feverish temperatures make it more difficult for viruses to hijack our cells. A mouse study suggests it's the heat itself that makes the difference.

Smart scales track changes in your muscle mass, body fat percentage and other health metrics — but how do smart scales work, and how accurate are they? When you purchase through links on our site, we ...

How long alcohol stays in the body and why the timing is different for everyone. A doctor shares how the liver breaks down ...

What Is the Difference Between Probiotics and Prebiotics? FITBOOK explains why both are important for gut health and ...