The goal of this single-group, open-label, phase I/II clinical trial is to evaluate the safety and efficacy of the transplantation of umbilical cord mesenchymal stem cells in aging-related low-grade inflammation patients' pro-inflammatory cytokines. The main questions to answer are: * Is the transplantation of umbilical cord mesenchymal stem cells in aging-related low-grade inflammation patients safe? * Comparison of the expression levels of pro-inflammatory cytokines (IL-1α/β, TNF-α/β, IL-6, IL-11, IL-18, IFN-γ) in the patient's blood before (day 0), after 90 days, and after 180 days of cell transplantation. * Comparison of the expression levels of anti-inflammatory cytokines (IL-10, TGFβ, IL-1) in the patient's blood before (day 0), after 90 days, and after 180 days of cell transplantation. * Comparison of the inflammation balance by the ratios of pro-inflammatory cytokines to anti-inflammatory cytokines in the patient's blood before (day 0), after 90 days, and after 180 days of cell transplantation. * Comparison of the HbA1C index in the diabetes patient's blood before (day 0), after 90 days, and after 180 days of cell transplantation. * Comparision of the indices of Cholesterol, Triglyceride, LDLc, HDLc in the dislipidemia patient's blood before (day 0), after 90 days, and after 180 days of cell transplantation. * Comparison of the BMI in the obese patient's blood before (day 0), after 90 days, and after 180 days of cell transplantation. * Determination of adverse effect frequency in the patients before (day 0), during, after 90 days, and after 180 days of cell transplatation. Participants will receive two intravenous infusions of 100 million umbilical cord mesenchymal stem cells on days 0 and 90. The patient will be monitored for safety and measured as per the study protocol until day 180.
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Adverse effect
Timeframe: From the patients enrolled in the study until 30 days after the study ended.
Serve adverse effect
Timeframe: From the patients enrolled in the study until 30 days after the study ended.