Because the kidneys produce carnitine, kidney disease could lead to a deficiency of carnitine in the body.

由于肾脏产生肉碱，肾脏疾病可能导致身体的肉碱缺乏症。

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Many of the symptoms of hypoadrenalism are due to a deficiency of the steroid hormone cortisol, which is a potentially fatal deficiency if left uncorrected.

很多肾上腺功能减退的症状均由于淄类激素皮质醇的缺乏。这种缺乏如果不加治疗会有很大的潜在危险。

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Although caffeine, as a diuretic, increases the excretion of urine, it does not lead to a deficiency of body water, the panel concluded, suggesting that the effect is fleeting.

虽然咖啡因作为一种利尿剂增加了排尿量，它并不会导致身体缺水，专家组总结道，暗示这种效应是短暂的。

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Researchers found that these drinkers develop a form of esophageal cancer six to ten times more often than those without the deficiency.

VOA: special.2009.05.13

Doctors rarely see these conditions. But studies have linked vitamin D deficiency to a number of serious health problems, including heart disease, several types of cancer, osteoporosis,diabetes, Alzheimer's disease and some autoimmune disorders.

VOA: standard.2010.05.28

The college is to produce leaflets in a bid to raise awareness of vitamin D deficiency among the profession.

BBC: Cheap vitamin D 'would boost health'

In the last 10 years, doctors have been seeing more cases of vitamin D deficiency, leading to a debate over the use of food supplements and concern that many medical staff are unaware of the problem.

BBC: Experts review vitamin D advice

However, a vitamin B-12 deficiency is most often due to a lack of a substance called intrinsic factor.

CNN: Vitamin deficiency anemia