These include iron and zinc, frequently found in meat, and calcium and vitamin B12.
Taking too much folic acid - over 1mg a day - can mask signs of vitamin B12 deficiency.
Vitamin B12 was also a great help in keeping her nervous system balanced.
Four times a month, I'll give myself a scheduled injection of vitamin B12.
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Her exam revealed inordinately high levels of gastrin--an indicator of atrophic gastritis or pernicious anemia, a deficiency of vitamin B12.
Others, like vitamin B12, can be depleted by regular alcohol consumption.
Vitamin B12, for example, is crucial to human health and function.
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We see high HgA1Cs that are accurate measurements, but not reflective of glucose control in people with low red cell turnover from iron, vitamin B12 or folate deficiency.
It adds that taking 2mg or less of vitamin B12 supplements a day is unlikely to cause harm, but that there is not enough evidence to know what the effects of taking more than that would be.
Professors Brian Wharton and Ian Booth, from the Institutes of Child Health in London and Birmingham, warned that in people with vitamin B12 deficiency, consumption of folic acid may mask a condition called megaloblastic anaemia - which if not picked up can lead to degeneration of the spinal cord.
The exact cause of spina bifida is unknown, but experts agree women of childbearing age can reduce the risk of their child getting this disease by getting enough folic acid (at least 400 micrograms) from leafy green vegetables, fruits, beans or supplements and vitamin B12 (2.8 micrograms), found in meat and eggs.
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