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The reason many people inject vitamin B12 for general health maintenance is because vitamin B12 helps the body perform so many of its crucial functions
According to the National Academies of Sciences, Engineering, and Medicine (NAP), a safe highest level is called the tolerable upper intake level. Assessment of what amount is too much is based on animal and human studies, published evidence of adverse events, and professional agreement based on a committee of experts
was of two vegan families who had been vegan for at least two years and had not regularly received B12 from supplements or fortified foods (Crane, 1998)
The uneducated clinicians will say, you dont have Intrinsic factor antibodies (IFA) so you dont have pernicious anaemia (PA) and so you will stay on tablets because we decided you can now miraculously absorb B12 from food! This ludicrous concept crops up frequently (I have blogged about it before here.) It needs repeating so often PA is just one of many causes and they are all serious and need correct treatment
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