by sidrah » March 25th, 2006, 9:33 pm
Shrimp and Dietary Cholesterol from Food Market Exchange
Cholesterol from food has a negative impact only if it is absorbed, and saturated fat seems to assist absorption. Eating food with a highly saturated fat content raises LDL cholesterol. Most high-cholesterol foods (such as meat, eggs, and dairy products) are also high in saturated fat, and increase LDL.
Shrimp have a high level of cholesterol, but have essentially no saturated fat (slightly over I gram per serving, compared to beef, which can have 10 to 20 grams). And shrimp's cholesterol is harder to absorb than that from other high-fat foods, although the reasons are not known.
In the past, scientists could not differentiate the different sterols and measured them all as "cholesterol". This is why the amount of cholesterol in shrimp and other shellfish reported is very high.
We now know that the amount of cholesterol in shrimp is approximately 130 mg per 3 oz of raw shrimp, or about 12 large shrimp, and with only 2 grams of fat. The amount of cholesterol in a comparable portion of regular ground beef is about 110 mg, with approximately 20 grams of fat. And shrimp have high levels of beneficial highly unsaturated fatty acids, which raise HDL cholesterol levels, so eating shrimp may actually lower blood cholesterol levels.