The observed threshold effect at 358.7 pg/mL (OR = 1.04 per 10 pg/mL, 95% CI: 1.001.08, P = 0.03) suggests a plateau in B12 benefit beyond this level, likely due to saturation of methionine synthase activitya mechanism consistent with non-linear enzymatic dose-response relationships, where additional B12 may not enhance methylation capacity [21]
By reducing it to dihydrolipoate, dietary -lipoic acid participates in the regeneration of other antioxidants (e.g., vitamins C and E, reduced glutathione), thus being considered an inducer molecule (Johansen et al., 2005)

Gel Cream 40mL La Roche-Posay Mela B Serum 50mL La Roche-Posay Hyalu B5 Serum 50mL La Roche-Posay Anthelios UVMUNE 400 Ultra Invisible Fluid SPF 50mL + La Roche-Posay Toleriane Caring Face Wash 200mL La Roche-Posay Retinol B3 Anti-Ageing Serum 30mL La Roche-Posay Effaclar Serum 30mL La Roche-Posay Cicaplast B5 Serum 30mL La Roche-Posay Anthelios Invisible Fluid SPF 50+ 50mL La Roche-Posay Toleriane Sensitive 40mL La Roche-Posay Toleriane Riche 40mL La Roche-Posay Hyalu B5 Hyaluronic Acid Eye Serum 15mL La Roche-Posay Cicaplast Baume B5+ Balm Cream 100mL La Roche-Posay Effaclar Micro-Peeling Purifying Gel Cleanser 400mL La Roche-Posay Effaclar DUO +M Moisturiser 40mL Shop Half Price Skincare Garnier Vitamin C Brightening Serum with Melasyl 30mL Garnier Hyaluronic Acid Makeup Cleansing Balm 119g L'Oral Paris Age Defying Le Duo Serum 30mL Avne Thermal Spring Water 300mL Garnier Micellar Cleansing Water 700mL Olay Super Serum Day 30mL Olay Retinol Body Lotion 502mL Dr
AHRQ publication no
Store tightly closed, in a cool, dry place, away from sunlight and heat