b12 injections vs eating meat When it comes to vitamin B12, red tops the charts Foods High in Vitamin B12:

And I can say no to social drinking (much easier in pandemic times)

PMID 41006924

The difference in free energy, of electron flow through complexes I and II, accounts for the fact that a pair of electrons originating from NADH and passing to oxygen supports production of 2.5 (more commonly reported as 3) equivalents of ATP, while two electrons from FADH 2 (at complex II) support the production of only 1.5 (more commonly reported as 2) equivalents of ATP

A blood test can be helpful to confirm deficiency, but it is not always required

Do not rub or massage the injection site immediately after administering Saxenda, as this may cause irritation or affect absorption

People with Anemia : Those diagnosed with certain types of anemia may benefit from B12 injections to support red blood cell production