According to one large study in 9,075 people, having higher blood levels of vitamin B12 was associated with a lower risk of obesity ( Similarly, another study in 976 people showed that having low levels of vitamin B12 was linked to a higher risk of overweight or obesity ( Whats more, a study in 256 children showed that children with lower levels of vitamin B12 tended to have a higher body mass index (BMI), which is a measure of body size determined by height and weight ( However, keep in mind that while these studies show an association between vitamin B12 status and body weight, they dont take other potentially contributing factors into account
Am J Physiol Gastrointest Liver Physiol 327:G345G359 Bertoli D, Mark EB, Liao D, Brock C, Frokjaer JB, Drewes AM (2023) A novel MRI-based three-dimensional model of stomach volume, surface area, and geometry in response to gastric filling and emptying
Gastrointestinal tolerance requires careful tracking, as nausea, vomiting, diarrhea, and constipation represent the most common adverse effects
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