Stem Cell Regeneration

Participants who doubled circulating stem cells also doubled vascular resiliency in a standard vascular test. High-flavanol cocoa was reported to increase circulating stem cells in older men with cardiovascular disease. The article asserts that humans regenerate tissues, although often slowly. The gut, hair, skin, liver, and some lung tissue are given as examples of human regenerative capacity. Low oxygen or relative hypoxia is presented as a possible stimulus for regenerative pathways.