Word: blood
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Dates: during 1980-1989
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...counter this confusion, the National Heart, Lung and Blood Institute has for the past three years been running a National Cholesterol Education Program. Last year the program set 200 mg/dl as the amount of total cholesterol (essentially LDL plus HDL) above which individuals are considered to be potentially at risk of developing heart disease; those between 200 and 239 are borderline high risk; anyone with a count of 240 or more may be at high risk. The program suggested that everybody should aim for an LDL count of 130 or lower. However, it did not recommend specific HDL targets...
...later years, though, this advantage is lost, and women between 55 and 64 have significantly higher total cholesterol levels than men the same age. The dangers of high readings are evident: the chance of a heart attack has been found to double with every 50 mg/dl increase in blood cholesterol once the level goes over...
...picture is gradually improving, however. In 1986 the percentage of Americans whose blood cholesterol had been checked rose to 46%, from 35% three years earlier. Last May a cholesterol-screening program brought 400,000 people into more than 400 hospitals around the country. Total cholesterol is now commonly measured by portable testing machines, which produce results in minutes...
...great, but every time he eats, his bloodstream is flooded with fatty particles called chylomicrons, which transport triglycerides and cholesterol out of the intestines to the rest of | his body. Soon Fred's liver is busy mopping up chylomicrons and is unable to cope with excess LDL in the blood. The surfeit of cholesterol particles then begins circulating freely through the body. Unless it is stopped, it can lead to the formation of deadly plaque...
...Fred may be able to counter the effects of his gastric binges if he has enough of the HDL vigilantes in his blood. Largely produced in the liver and the intestines, these flat, disklike particles resemble "empty envelopes waiting to be filled," says Dr. Norman Miller, head of endocrinology at North Carolina's Bowman-Gray School of Medicine. As the VLDL and chylomicron particles unload their triglyceride cargoes into the body's cells, the particles become wrinkled like prunes. In the process, fragments containing proteins, fats and cholesterol break away. It is at this point that the unfilled HDL particles...