8.1.4 Research limitations and considerations While the evidence is compelling, several limitations must be acknowledged, including the reliance on observational studies for human data, potential confounding factors in epidemiological investigations, and the extrapolation challenges from animal models to human populations
Although B12 deficiency is important and must be corrected by supplementation, another large study did not find it increased risk for Parkinsons
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Common Stomach Side Effects of Vitamin B12 Supplements Although vitamin B12 supplements are generally well-tolerated, some individuals experience gastrointestinal symptoms, particularly when taking oral formulations
Seizures usually manifest within the first 2 weeks of life, with a small number of cases may develop after the first year
Rat tendon biology is not human tendon biology