From minimalist wrist designs to full sleeves, body art has become so common that it barely raises an eyebrow. But while the personal meaning of a tattoo may be obvious, the biological consequences are far less visible. Once tattoo ink enters the body, it does not stay put. Beneath the skin, tattoo pigments interact with the immune system in ways scientists are only just beginning to understand.

Lawmakers in several states are working to expand medical debt protections for patients, even after the Trump administration reversed course and told states they don't have authority to take action on credit reporting.

As millions prepare to set New Year's resolutions centered on "eating clean" and "getting fit," new research suggests these habits could also benefit your pillow time.

Encouraging people to get vaccinated is often seen as a public health success story. However, understanding how persuading people to roll up their sleeves to receive vaccines creates social division is crucial—particularly in a post-COVID-19 world, where attitudes about infection control may influence conflict.