Immune System Rebuild Protocol

Chemotherapy and radiation affect the bone marrow, the gut lining and immune organs such as the thymus. Neutrophils usually recover within weeks; lymphocytes (T cells and B cells) can take months to years. Glutamine is one of the most studied supplements here, mainly for gut lining recovery. Vitamin D is often low after cancer treatment, and zinc supports T cell function. Turkey tail (PSK) has been studied for decades in Japan alongside chemotherapy, with some trials showing longer survival in certain cancers. Reishi, maitake and cordyceps have smaller studies. Probiotics can help rebuild the gut microbiome once counts recover. Protein is the foundation for rebuilding white cells and antibodies. Timing matters: support during treatment, and stronger immune support only after treatment ends and your oncology team agrees. Work with your oncology team and an integrative oncology dietitian. Integrative care goes alongside your oncology care, never instead of it.