Mild mitral regurgitation can be caused by diseases or it can also be seen in healthy individuals. In healthy people, as age increases, the valve may experience some aging, leading to mild regurgitation. This mild mitral regurgitation is not considered a pathological condition and does not require treatment. Of course, mild mitral regurgitation can also be seen in some organic heart diseases, most commonly due to heart enlargement caused by various diseases leading to relative mild mitral regurgitation. For mild mitral regurgitation caused by diseases, it is important to effectively treat the related diseases to maintain stability of the condition, to prevent the disease from worsening and causing the heart to enlarge further, leading to more severe mitral regurgitation.