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Even if you are not a vegetarian or vegan, many factors may increase your risk of B12 deficiency: Individuals over 50 years old Certain medications Auto-immune disease Consumption of alcohol * Taking Birth Control Pills Vitamin B12 injections are used because deficiency is very common
Tap water contains chlorine, fluoride, minerals, and bacteria that degrade peptides and introduce contamination
In a recent review (2018) by the famous Cochrane Institute, it was reported that studies which had been published on this topic only provided very low-quality evidence that oral B12 is as efficacious as intramuscular B12
10.1016/j.canlet.2014.09.003 173 ZhangB.JinY.ZhangL.WangH.WangX
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