Among the many changes, be aware that the amount of vitamin B-12 was increased to a whopping 400 mcg, up from 22 mcg
The following table summarizes the evidence landscape honestly, tier by tier
This is why we focus so heavily on bioavailability
[4Fe-4S] cluster assembly in mitochondria and its impairment by copper
Alyasiri T, Salah A, Ithar A (2018) In vitro and in vivo antioxidant effect of Spirulina platensis against lead induced toxicity in rats
In the serum, Fe 2+ is oxidized by ceruloplasmin to Fe 3+ and then binds with transferrin (TF) to form a TFFe 3+ complex, which is endocytosed through the cell membrane transferrin receptor 1 (TFR1) ( 3+ is reduced to Fe 2+ , and the latter is transported out by the divalent metal ion transporter 1 (DMT1) or the zinc-iron-regulatory protein family 8/14 (ZIP8/14) ( 2+ is involved in the unstable iron pool (LIP)