Every single one of the genetic combinations she lists below should be able to tolerate B12 in the form of hydroxy B12 (and this is why our methylation protocol suggests hydroxy B12 as the B12 form to begin with): Folks with multiple COMT mutations tend to do very well with hydroxy B12 (it helps mop up excess peroxynitrites which can cause problems) Folks with MTR & MTRR mutations may do well with methylcobalamin & adenosylcobalamin supplementation And Dr
(b) improve neuromuscular function, including, but not limited to, following acute muscle injury, following overuse muscle injury, following chronic muscle injury, during strength/resistance and/or endurance training, during/following muscle dysfunction accompanying aging, following muscular atrophy
When you take B12 orally, it has to pass through the stomach and intestines before being absorbed into the bloodstream (believe us, it's a long journey - have you ever seen that one Magic School Bus episode?!)
Tuna Tuna contains high concentrations of B12, particularly in the darker muscles right underneath the skin