The heart also is involved in powering the lymphatic system, though it's complicated. It powers it for part of the time, then part of the time, lymph is beyond its reach.

I have a history of heart pain and heart weirdness associated with certain health issues. It has gotten better over time as my health issues have improved.

I have come to believe that some of my heart issues -- especially pain in my chest, which is why I am replying to you -- are related to how the lymphatic system works and are related to health events that put a strain on my lymphatic system in some way.