糙皮病是一种由烟酸缺乏引起的疾病。

Pellagra is a disease that results from niacin deficiency.

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因此在美国由营养缺乏引起的疾病很少。

As a result, diseases caused by nutrient deficiency are rare in the United States.

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锌缺乏引起肝脏铁含量的明显升高，升高的铁离子有可能造成氧化损伤。

Zinc deficiency led to higher liver iron concentration that would result in oxidative stress and tissue damage.

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How can we prevent murderous schoolyard violence in children who have access to weapons,poor parental supervision, and a mean streak?"

如何防止校园暴力,这些暴力事件通常是由掌握武器，缺乏父母监管，或受到教唆的孩子引起的“

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Type II Diabetes usually has its onset in adulthood-- that's beginning to change-- and is usually created by lifestyle factors: poor diet, physical inactivity, and obesity.

型糖尿病多见于成人,情况现在开始改变,这种病通常由不良生活方式引起,不良的饮食,锻炼的缺乏以及肥胖

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And one factor in Parkinson's is too little of a neurotransmitter known as dopamine.

引起帕金森症的一个病因,便是严重缺乏一种叫做多巴胺的神经递质

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