vitamin B deficiency

Pernicious anemia: Slow-developing disease in which <b>vitamin B 12 deficiency impairs red-Blood-cell production.

恶性贫血: 一种慢性疾病,由于维生素B12不足而引起红血球减少.

Vegans consume no animal products and are susceptible to <b>vitamin B 12 deficiency.

素食者不吃任何动物性食物,易患维生素B12缺乏症.

Get your daily dose of Vitamin B: Lethargy, poor concentration, and depression could be signs of a Vitamin B deficiency.

每天补充维生素B：嗜睡、注意力差、情绪低落可能都是缺乏维生素B的表现。

Another possibility ( although this is far less common) is a vitamin B deficiency, if the cracks are accompanied by a sore tongue.

而另一种引发的原因便是维生素B缺乏症，嘴角开裂的同时伴随有口疮舌疮的情况。

An exclusively breastfed infant can develop <b>vitamin B 12 deficiency if the mother a vegan.

如果母亲是素菜者,则纯粹母乳饲育的婴儿就有可能发生维他命B12缺乏症.