The latest and special themed issue of Circulation: Cardiovascular Quality and Outcomes features studies related to women and cardiovascular diseases. In an editorial, researchers have revealed that the huge pool of data on the topic is still relatively limited and has left "more questions than answers".

In one of the included studies, researchers stressed that women are underrepresented in research areas which are cited in the American Heart Association's prevention guidelines for women.

Another study, on the other hand, has highlighted that post a cardiovascular attack, low social support is tied to poorer health outcomes, especially for women.

"After at least a decade of renewed interest in women's cardiovascular health, we are left with more questions than answers", wrote Viola Vaccarino, Professor of medicine at Emory University School of Medicine in Atlanta.

Heart disease is the leading killer of American women, causing more than 430,000 deaths every year.