How Cutting Calories May Rejuvenate the Body's Aging Stem Cells
Based on: Caloric restriction rejuvenates aged adult stem cells: From mechanisms to interventions.
Our stem cells repair tissue, but they slow down as we age. This review looks at how eating less, known as caloric restriction, can refresh tired stem cells in blood, gut, brain, and muscle. Much of the effect runs through a nutrient-sensing pathway called mTOR, the same one that drugs like rapamycin target.
Key Insight
This review suggests caloric restriction may help refresh aging stem cells, mostly based on animal work.
Original Paper
Chai Y, Liu X, Bi J, Zeng J, Yao M, Shi F, Xu S
Related Studies
Clearing Out Aging Cells Made Stem Cell Repair Work Far Better in Mice
Old, worn-out cells (called senescent cells) seem to block the body's natural repair work. In mice with liver damage and forced aging, combining a treatment that clears these cells with stem cell therapy worked far better than either alone. The combo reversed signs of aging and restored repair signals. This is early animal research, not tested in people.
Caloric Restriction Slows Aging Most in the Heart and Metabolism
Cutting calories doesn't slow aging evenly across all organs. In a two-year trial, 185 adults were randomly assigned to caloric restriction or normal eating. The caloric restriction group aged about one year less in their cardiovascular and metabolic systems over 24 months. Kidney aging, however, didn't budge, and liver aging only slowed modestly at the two-year mark.
Disclaimer: Research summaries are provided for informational purposes only and do not constitute medical advice. Always consult a qualified healthcare professional before making changes to your health routine.