Yet, in cases of amino acid deficiency, it can be prevented.

如果是因为缺乏氨基酸，还能预防。

youdao

That, plus evidence that folate deficiency is associated with clinical depression, suggests eating spinach, orange juice and Marmite, which are all rich in folic acid.

加上临床抑郁症与叶酸缺乏有关的证据，那就可以建议吃些富含叶酸的菠菜，橙汁和酵母酱。

youdao

Deficiency is the most frequently encountered vitamin deficiency in the U.S., but vegetarian women consume more folic acid on average than meat-eaters.

缺乏叶酸是美国最常见的维生素缺乏症，但食素的妇女比食肉的平均叶酸食用量要多。

youdao

An early symptom of B12 deficiency is anaemia, but taking large amounts of folic acid treats the anaemia without treating the B12 deficiency.

BBC: Vitamin B 'puts off Alzheimer's'

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.

BBC: Caution urged over folic acid

Taking too much folic acid - over 1mg a day - can mask signs of vitamin B12 deficiency.

BBC: Vitamin B 'puts off Alzheimer's'