The words "health" or "healthy" can also be used in non-medical contexts. For example "A healthy economy needs an ideal GDP growth rate that is sustainable, one that remains in the expansion phase of the business cycle as long as possible."
On the other hand, if you hear the phrase "With all these deadlines, presentations and working weekends. I wonder what the effect will be on her. most likely the word refers more to mental health than physical. The definition of it has evolved over time. In keeping with the biomedical perspective, early definitions of it focused on the theme of the body's ability to function; it was seen as a state of normal function that could be disrupted from time to time by disease.