Scientists Discover That Fasting Triggers Stem Cell Regeneration of Damaged, Old immune system & Fights Cancer

A number of ancient health practices are proving to be effective in multiple ways. We recently posted an article about meditation, and how neuroscience can now explain what happens to the brain when we meditate. Now, scientists have discovered the first evidence of a natural intervention triggering stem cell-based regeneration of an organ or system. The study was published in the June 5 issue of Cell Stem Cell by researchers from the University of Southern California. The research shows that cycles of prolonged fasting protect against immune system damage and induce immune system regeneration. They concluded that fasting shifts stem cells from a dormant state to a state of self-renewal.

Human clinical trials were conducted using patients who were receiving chemotherapy. For long periods of time, patients did not eat which significantly lowered their white blood cell counts. In mice, fasting cycles “flipped a regenerative switch, changing the signalling pathways for hematopoietic stem cells, which are responsible for the generation of blood and immune systems.”

 Scientists Discover That Fasting Triggers Stem Cell Regeneration of Damaged, Old immune system & Fights Cancer

“We could not predict that prolonged fasting would have such a remarkable effect in promoting stem cell-based regeneration of the heatopoietic system. When you starve, the system tries to save energy, and one of the things it can do to save energy is to recycle a lot of the immune cells that are not needed, especially those that may be damaged. What we started noticing in both our human work and animal work is that the white blood cell count goes down with prolonged fasting. Then when you re-feed, the blood cells come back. ” – Valter Longo, corresponding author.

Again, because fasting significantly lowers white blood cell counts, this triggers stem cell-based regeneration of new immune system cells. More importantly, it reduces the PKA enzyme, which has been linked to aging, tumour progression and cancer.(1) It’s also noteworthy to mention that fasting protected against toxicity in a pilot clinical trial where patients fasted for 72 hours prior to chemotherapy.

Fasting cycles

“Chemotherapy causes significant collateral damage to the immune system. The results of this study suggest that fasting may mitigate some of the harmful effects of chemotherapy.” Co-Author Tanya Dorff

Fasting is a tradition that’s been incorporated into many ancient cultures, from Vedic to Buddhist and more, fasting should not be confused with starvation. It’s the process of restrain and control from the sensorial experience of eating and at the same time making sure you are doing it correctly. When I fast, I usually do water fasts and I have been doing them for almost eight years now and I always feel great and full of energy after doing so.

“We are investigating the possibility that these effects are applicable to many different systems and organs, not just the immune system,” said Longo, whose lab is in the process of conducting further research on controlled dietary interventions and stem cell regeneration in both animal and clinical studies.

The study was supported by the National Institute of Aging of the National Institutes of Health (grant numbers AG20642, AG025135, P01AG34906). The clinical trial was supported by the V Foundation and the National Cancer Institute of the National Institutes of Health (P30CA014089).

Chia Wei-Cheng of USC Davis was first author of the study. Gregor Adams, Xiaoying Zhou and Ben Lam of the Eli and Edythe Broad Center for Regenerative Medicine and Stem Cell Research at USC; Laura Perin and Stefano Da Sacco of the Saban Research Institute at Children’s Hospital Los Angeles; Min Wei of USC Davis; Mario Mirisola of the University of Palermo; Dorff and David Quinn of the Keck School of Medicine of USC; and John Kopchick of Ohio University were co-authors of the study.

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