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Poultry and eggs also contain vitamin B12
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More emphasis should be placed on effective vitamin B-12 supplementation and monitoring of vitamin B-12 status in persons who have chosen lifelong adherence to a vegetarian diet
Claims that either route is superior go beyond the available data
If dietary sources are insufficient, however, a doctor may recommend supplementation through pills or injections, depending on the cause of the deficiency.
Researchers observed that intra-articular administration was associated with changes in cartilage matrix composition and chondrocyte activity markers in the treated joints compared to controls [3]
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