A method and composition for stimulating the proliferation and differentiation of stem cells is used to self-repair injury in mammals. A supplement is administered having an effective dose of substances selected from blueberry, carnosine, catechin, green tea extract, VitaBlue, Vitamin D3, Spirulina, AFA or effective combinations and derivatives of these. For example, a supplement comprising wild blueberry, green tea extract, carnosine, vitamin D3, and a Spirulina and/or an AFA-Omega (EtOH) exhibited a synergistic and unexpected association with substantially increased proliferation of bone marrow stem cells and CD34+. A therapeutic amount of a substance that is associated with a substantial increase in stem cells may be used to prevent and repair damages tissues of the brain, due to stroke, the heart, due to coronary artery disease or a heart attack.