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As we age, chromatin tends to become heterochromatic: densely packed, transcriptionally silent, and resistant to repair [34]

They also support immune function, reducing infection risk and supporting the body's ability to manage surgical stress

Taking probiotics adds more good bacteria to your system, improving your digestive health and preventing the overgrowth of bad bacteria.74 Research has shown that good bacteria can, in some cases, reverse the symptoms of leaky gut by bolstering tight junction proteins, though researchers are still working to understand exactly how that works.29 Prebiotics Like probiotics, prebiotics work to improve your gut microbiomes health

PLoS Biology 2008;6, 2853-2868

"Oral vitamin B12 versus intramuscular vitamin B12 for vitamin B12 deficiency"