Many experience fatigue and cognitive issues despite normal Vitamin B12 levels due to functional deficiency, where the body ...

Kristin Weiland is a documentary film producer and writer with a background in crisis management and ethnographic research. She specializes in investigative and social impact documentary projects, and ...

This article was reviewed by Darragh O’Carroll, MD. Understanding Blood Tests: How They Work and What They Can Tell You Blood ...

Even though it often gets a bad rap, cholesterol is actually essential for health. Your body needs cholesterol for important functions like building cells and creating hormones like estrogen and ...

Lindsay Modglin is a nurse and professional writer who regularly writes about complex medical topics, as well as travel and the great outdoors. She holds a professional certificate in scientific ...

The U.S. health care system primarily focuses on treating illnesses rather than preventing them. Many chronic diseases, like heart disease, develop without obvious symptoms until they are advanced. A ...

This article was reviewed by Felix Gussone, MD. If you’ve been feeling a bit more couch potato than go-getter lately, dragging through the day, snapping at people for no reason, or wondering where ...

An increase of more than 0.75 ng/mL has also been considered as a cutoff to begin a more thorough workup. However, the PSA ...