Patients with Leber hereditary optic neuropathy should not take methyl B12, since this disease can get worse with high methyl B12 levels
overtraining can worsen gut health
Overwater IE, Rietman AB, Mous SE, Bindels-de Heus K, Rizopoulos D, Ten Hoopen LW, et al
To further assess the relevance of the in vitro iPSC-hBBB model, we used compounds with known passage across the human BBB in vivo [rate constant for transfer from arterial plasma into brain obtained from compartment modeling of PET data, K 1 , mL.cm 3 .min 1 (S1 Table 1)]
As a result, people may rely on other ways to boost their glutathione levels, such as taking pills, topical applications, and glutathione shots (or intravenous drips)
A review of B12 studies for neuropathic pain found positive results