Rushing through the math or guessing leads to under- or over-dosing
Individuals with B12 deficiency, which can occur due to dietary restrictions (e.g., vegan or vegetarian diets), gastrointestinal disorders affecting absorption, older age, or certain medical conditions that interfere with B12 absorption
Further, a secondary analysis of a trial in women at high risk for or with existing cardiovascular disease reported that high-dose supplemental B-vitamins (1 mg/day of vitamin B 12 , 50 mg/day of vitamin B6, and 2.5 mg/day of folic acid) for 7.3 years had no effect on risk of non-vertebral fractures (122)
Importantly, this proof-of-concept study showed that the relative abundance of Lactobacillus , a genus associated with weight loss 58 , was uniquely increased and Erysipelatoclostridium was distinctly decreased in mice given 5A-1MQ treatment and an LD switch compared to mice switched to LD and given vehicle treatment