| disaccharidase deficiency | A digestive disorder caused by the body being unable to produce enough disaccharidase, an enzyme responsible for breaking down carbohydrates in the small intestine. This may cause symptoms such as intestinal gas and diarrhoea. (09 Oct 1997) |
|---|---|
| IgA deficiency | A dysgammaglobulinaemia characterised by a deficiency of IgA. (12 Dec 1998) |
| IgG deficiency | A dysgammaglobulinaemia characterised by a deficiency of IgG. (12 Dec 1998) |
| immune deficiency | Impaired ability of the bodys defence mechanisms to combat infections by bacteria, viruses and fungi. (13 Nov 1997) |
| immune deficiency diseases | Those diseases in which immune reactions are suppressed or reduced. Reasons may include congenital absence of B and/or T lymphocytes or viral killing of helper lymphocytes (see HIV). (18 Nov 1997) |
| immunity deficiency | Inabillity to mount a normal immune response. Immunodeficiency can be due to a genetic disease or acquired as in aids due to HIV. (12 Dec 1998) |
| immunoglobulin G subclass deficiency | A rare inherited disorder in which there are reduced levels of one or more IgG subclasses resulting from defective heavy chain genes or an abnormality in the regulation of immunoglobulin isotype switching. (05 Mar 2000) |
| immunological deficiency | Inabillity to mount a normal immune response. Immunodeficiency can be due to a genetic disease or acquired as in aids due to HIV. (12 Dec 1998) |
| immunologic deficiency syndromes | Syndromes in which there is a deficiency or defect in the mechanisms of immunity, either cellular or humoral. (12 Dec 1998) |
| iodine deficiency | Iodine is a natural requirement of our diets. Iodine deficiency can lead to inadequate production of thyroid hormone from the thyroid gland (hypothyroidism). For example, in some parts of zaire, ecuador, india, and chile, remote, mountainous areas, such as in the alps (in the past), andes and the himalayas have a particular predisposition to severe iodine deficiency, goiter, and hypothyroidism. Since the addition of iodine to table salt, iodine deficiency is rarely seen in the united states. (12 Dec 1998) |
| iron deficiency | Deficiency of iron results in anaemia because iron is necessary to make haemoglobin, the key molecule in red blood cells responsible for the transport of oxygen. In iron deficiency anaemia, the red cells are unusally small (microcytic) and pale (hypochromic). Characteristic features of iron deficiency anaemia in children include failure to thrive (grow) and increased infections. The treatment of iron deficiency anaemia , whether it be in children or adults, is with iron and iron-containing foods. Food sources of iron include meat, poultry, eggs, vegetables and cereals (especially those fortified with iron). According to the National Academy of Sciences, the recommended dietary allowances of iron are 15 milligrams per day for women and 10 milligrams per day for men. (12 Dec 1998) |
| iron deficiency anaemia | Hypochromic microcytic anaemia characterised by low serum iron, increased serum iron-binding capacity, decreased serum ferritin, and decreased marrow iron stores. Synonym: hypoferric anaemia. (05 Mar 2000) |
| taste deficiency | Reduced or absent ability to detect a bitter taste in a group of compounds of which phenylthiocarbamide is the prototype, due to the homozygous state of a common allele. See: phenylthiourea. (05 Mar 2000) |
| thiamin deficiency | An endemic form of polyneuritis (nerve inflammation), due to an unbalanced diet, with a deficiency of vitamin B1(thiamin). Common in those who chronically abuse alcohol. Synonym: beriberi. (27 Sep 1997) |
| thiamine deficiency | A nutritional condition produced by a deficiency of thiamine in the diet, characterised by anorexia, irritability, and weight loss. Later, patients experience weakness, peripheral neuropathy, headache, and tachycardia. In addition to being caused by a poor diet, thiamine deficiency in the united states most commonly occurs as a result of alcoholism, since ethanol interferes with thiamine absorption. In countries relying on polished rice as a dietary staple, beriberi prevalence is very high. (12 Dec 1998) |