Stem cells come from several different sources: embryos, adult tissue such as bone marrow and fat, umbilical cord and placental tissue left over after birth, and lab-reprogrammed adult cells called iPSCs. Each source has its own properties, collection method, and level of regulatory oversight, which is why knowing where a clinic's cells actually come from matters before you consider treatment.

Published success rates for stem cell therapy in MS can be encouraging — but what do they actually mean for your specific situation? This article breaks down how researchers define success, which patient factors matter most, and how to evaluate whether you may be a candidate for a physician-guided regenerative protocol.