Strength points and limitations Based on our knowledge, this is the most updated meta-analysis on this topic, including all available evidence based on our inclusion criteria of including only controlled studies, either RCTs or controlled observational studies, to reach the highest accessible quality of evidence from the available evidence found in the literature
Because it works
However, some symptoms are more noticeable, such as memory issues, difficulty maintaining your balance, mouth ulcers, a sore, swollen tongue, and heart palpitations
It also promotes strong shiny hair and strong nails
We will analyse the effect of vitamin B 12 separately in the following subgroups: Vitamin B 12 status: based on cobalamin (cut-off: 150 pmol/L) based on low total homocysteine (cut-off: 10 mol/L) based on low methylmalonic acid (cut-off: 0.26 mol/L) Maternal body mass index (cut-off: 18.5) Vegetarian (yes/no) Birth weight (cut-off: 2500 g) In these subgroup analyses, the differences in the effect between the levels of the subgroups will be measured by including two-way interaction terms in multiple regression models
