| low-fat diet | A diet containing minimal amounts of fat.Diets containing low amounts of fat and cholesterol are designed to reduce the risk of heart disease and, in some cases, cancer. Dozens of such diets have been promulgated, both by medical and lay advisors. Their popularity can be attributed in part to clinical studies that have, since the 1980s, revealed, on the one hand, the hazards of eating high-fat, high-cholesterol foods and, on the other, the benefits of ingesting less saturated fat and LDL (low density lipoprotein) cholesterol. Although coronary deaths have been reduced by roughly 30% since 1970, the aim of health officials is to further reduce heart attack rates. The average cholesterol level among adult Americans has fallen from 213 to 205 mg/dl since 1978. However, the National Cholesterol Education Program recommends that individuals maintain a total cholesterol level of no more than 200 mg/dl, with LDL at less than 130 mg/dl and HDL (high density lipoprotein) around 60 mg/dl. About one-half of American adults exceed those recommendations. Low-fat, low-cholesterol diets are rich in whole grains, fresh fruits and vegetables, and legumes, and limit or exclude consumption of processed oils, dairy products, nuts and seeds, and meats. See atherosclerosis, free radicals. (05 Mar 2000) |
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| low-necked | Cut low in the neck; decollete; said of a woman's dress. Source: Websters Dictionary (01 Mar 1998) |
| low-pass filter | A device or material with the opposite effect from a high-pass filter; most tissues act as low-pass filters of ultrasound signals. (05 Mar 2000) |
| low-pressure | Having, employing, or exerting, a low degree of pressure. Low-pressure steam engine, a steam engine in which low steam is used; often applied to a condensing engine even when steam at high pressure is used. See Steam engine. Source: Websters Dictionary (01 Mar 1998) |
| low-set ear | An ear positionned below its normal location. Classified as a minor anomaly. Technically, the ear is low-set when the helix (of the ear) meets the cranium at a level below that of a horizontal plane through both inner canthi (the inside corners of the eyes). The presence of 2 or more minor anomalies in a child increases the probability that the child has a major malformation. (12 Dec 1998) |
| Lowe's syndrome | <syndrome> Autosomal recessive syndrome in which ocular signs include cataracts and glaucoma. The central nervous system defects are manifested by mental retardation and hypotonia, and the renal abnormalities consist of tubular and later, glomerular insufficiency. (12 Dec 1998) |
| Lowe, Charles | <person> U.S. Paediatrician, *1921. See: Lowe's syndrome, Lowe-Terrey-MacLachlan syndrome. (05 Mar 2000) |
| Lowe-Terrey-MacLachlan syndrome | <syndrome> Autosomal recessive syndrome in which ocular signs include cataracts and glaucoma. The central nervous system defects are manifested by mental retardation and hypotonia, and the renal abnormalities consist of tubular and later, glomerular insufficiency. (12 Dec 1998) |
| Lowenberg's canal | Spiral tube in the bony canal of the cochlea, lying on its outer wall between the scala vestibuli and scala tympani. (12 Dec 1998) |
| Lowenberg's forceps | Forceps with short curved blades ending in rounded grasping extremities devised for the removal of adenoid growths in the nasopharynx. (05 Mar 2000) |
| Lowenberg's scala | Spiral tube in the bony canal of the cochlea, lying on its outer wall between the scala vestibuli and scala tympani. (12 Dec 1998) |
| Lowenberg, Benjamin | <person> French laryngologist, 1836-1905. See: Lowenberg's canal, Lowenberg's forceps, Lowenberg's scala. (05 Mar 2000) |
| Lowenstein, L | <person> See: Buschke-Lowenstein tumour. (05 Mar 2000) |
| Lowenstein-Jensen culture medium | Primary mycobacterial recovery media composed of fresh whole eggs, defined salts, glycerol, potato flour, and malachite green (as an inhibitory agent). Synonym: Lowenstein-Jensen medium. (05 Mar 2000) |
| Lowenstein-Jensen medium | Primary mycobacterial recovery media composed of fresh whole eggs, defined salts, glycerol, potato flour, and malachite green (as an inhibitory agent). Synonym: Lowenstein-Jensen medium. (05 Mar 2000) |