At-home health tests are booming—but are they reliable? Doctors explain which home tests are worth trying, which to skip, and ...

A man went to the emergency room after being in and out of hospitals for a month, and doctors found a surprising explanation ...

A 5,500-year-old skeleton has yielded the oldest known genome of the bacterium behind syphilis, revealing a lineage unlike any circulating today. That deep divergence pushes the history of these ...

Traces of a bacterium related to syphilis have been found in a bone from a person who lived in the mountains of Colombia over 5000 years ago. The discovery shows that this group of corkscrew-shaped ...

They can’t guarantee future health, but they can tell you the trajectory you’re on. By Dana G. Smith Take a minute to consider the last decade of your life. What type of physical shape do you hope to ...

An international scientific team reconstructs the oldest known genome of Treponema pallidum from 5,500-year-old human remains, revealing the presence of diseases such as syphilis in the Americas long ...

Psychology Today's online self-tests are intended for informational purposes only and are not diagnostic tools. Psychology Today does not capture or store personally identifiable information, and your ...

Lipoprotein (a) is a low-density lipoprotein that transports cholesterol in the blood. The lipoprotein (a) test — or Lp(a) test — determines the level of this lipoprotein in the blood, and its results ...

When violent crimes are committed, the crime scene is usually covered with blood. Blood may be shed when the person is standing, sitting, or on the ground. The weapon that caused blood to be released ...

Diagnosing non-Hodgkin’s lymphoma usually starts with a physical exam, then moves to blood tests and imaging to guide next steps. A lymph node biopsy is the gold standard for lymphoma diagnosis, and ...