Stem cell therapy side effects and risks: what to expect, what is rare, and what to avoid
Same-day, autologous stem cell therapy uses your own bone marrow or fat, harvested and injected in one visit, so rejection and donor-transmitted disease do not apply. Expected side effects: harvest-site soreness for 3 to 7 days and a sore, stiff joint for about a week, because the injection starts a repair response. Rare: infection, bleeding, or needle irritation of a nerve.