When i try to include the library from the sketch menu in the Arduino IDE it appear, but when i click on verify button (without adding any code, just import) i receive this error message:
Arduino\libraries\eHealth/eHealth.h:298:20: error: flexible array member 'eHealthClass::position' not at end of 'class eHealthClass'
Download the e-Health library for Arduino (important: V2.4 July 2015, body position function modified)
Probably new version of IDE can't understand how library was written. It may be possible to compile without errors if you use the IDE version that was released at the same time as the library. That's why older versions of the IDE are available.
Alternatively, find a newer version of the library, or ask the repository developer to update the library for use in the new IDE version.