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Gene-expression changes in dermal fibroblast cultures exposed to GHK-Cu collagen, decorin, and matrix-metalloproteinase regulation

Standard RDA: 2.4 mcg for adults Senior-Specific Needs: Often higher than 2.4 mcg due to absorption issues Recommended Intake for Seniors: At least 2.4 mcg, potentially much higher with supplementation Why the Standard 2.4 mcg May Not Be Sufficient The standard 2.4 mcg dosage might not be enough for seniors for a few reasons: Decreased Stomach Acid: Needed for B12 release from food Atrophic Gastritis: A common condition in older adults that makes it hard to absorb B12 Medication Interference: Some medicines can also block B12 absorption For those over 50, its best to get most of their vitamin B12 from supplements and fortified foods

Its also essential to keep an eye on the expiration date

In certain situations, for relatively healthy individuals, it might be OK, says Dr