Yes I m a little concerned about a friend she is 17 years old and smokes a tremendous amount of dabs on a daily she was born with a heart murmur. From my understanding it s not a rare thing for someone to be born with a heart murmur ( having one small hole ) as a matter of fact a large majority of children born with one by a certain age find that it will heal and close on its own, so I ve been told, but my friend does not just have one hole she has two about the size of a sewing needle tip. My concern and actually question is what could this do to her and her health more what can this do to her heart?