Harvard Health Content API

Mononucleosis can affect more than energy levels. Activity choices matter during illness, especially when the spleen may be enlarged.

Blood type compatibility matters during transfusions, and an Rh mismatch can create risks that may not appear immediately.

Sudden changes in speech, balance, and coordination can signal an urgent health concern, especially when they fade quickly or recur.

Vaccines can contain different forms of viruses, and the choice may affect how your immune system responds and which vaccine is right for you.

Osteoporosis in men can have several contributing factors, from hormones and medications to underlying conditions that affect bone health.

Vaginal dryness and discomfort can affect intimacy and daily life. See which options may ease symptoms linked to changing estrogen levels.

A fatty liver diagnosis and a high blood sugar reading may point to more than one concern. See what these findings could mean for your health.

Caregiving can have physical and mental effects. Explore ways to cope and find support.

Memory changes during a migraine can be unsettling and may have several explanations. See which symptoms need prompt medical attention and follow-up.