Cushing's syndrome is the result of the excessive production of corticosteroids by the adrenal glands. An overproduction of corticotropin (ACTH) - the hormone that controls the adrenal gland - by the pituitary gland, which stimulates the adrenal glands to produce corticosteroids, may be one cause. It is called Cushing's disease and the result of ACTH-secreting pituitary adenoma. Alt.
deficiency. a lack or shortage; a condition characterized by the presence of less than the normal or necessary supply or competence. color vision deficiency see color vision deficiency.
Photo by: Gravicapa. Dietary deficiencies are disorders that occur because of a lack of essential nutrients in the diet, or because the body cannot absorb and process those nutrients once they are eaten. Most dietary deficiency diseases are caused by a lack of protein, vitamins, or minerals.