Saturday, July 01, 2006

Good fats - Omega-3's

Polyunsaturated fish oils have always had a stellar reputation but now, three new studies show the omega-3 fats in fish oil protected people from sudden death. (In "sudden cardiac death", which causes half of all heart disease deaths, the heartbeat goes awry and then stops. Most victims have clogged arteries). *Healthy men who had more omega-3 fats in their blood were less likely to die of sudden death.
  • Healthy women who reported eating fish at least five times a week had a 45-percent lower risk of dying of heart disease.
  • Men who survived a heart attack and were randomly assigned to take fish oil supplements (1 gram or 1,000mg a day) were 53-percent less likely to die of sudden death than survivors who were given a placebo.
  • Due to these results and earlier studies, experts can now say that fish oils prevent arrythmias and sudden death. At higher doses, omega-3 fats may also protect the heart by lowering triglyceride levels and preventing blood clots, though that would not explain why the stave off sudden deaths.
In any case, the message is clear that eating more seafood is of great benefit to heart health. The American Heart Association now recommends at least two servings per week, preferably of fatty fish. (See list below). If you don't care for fish, there are other options. Among them: alpha-linolenic acid, an omega-3 that is largely found in flaxseed, canola and soy oils as well as flaxseeds, walnuts and soybeans.

Fish sources (and amounts) of Omega-3's
(6 ounces unless otherwise noted):
  • Salmon, Atlantic, farmed -3.7 grams
  • Salmon, Atlantic, wild - 3.1 grams
  • Sardines, in sardine oil (3-ounces) - 2.8 grams
  • Salmon, coho, farmed - 2.2 grams
  • Trout, rainbow farmed - 2.0 grams
  • Salmon, coho, wild - 1.8 grams
  • Herring, kippered (3 ounces) 1.8 grams
  • Trout, rainbow, wild - 1.7 grams
  • Swordfish - 1.4 grams
  • Sardines, in tomato sauce (3 ounces) - 1.4 grams
  • Herring, pickled - 1.2 grams
  • Oysters (3 ounces) - 1.1 grams
  • Mackerel, canned (3 ounces) - 1.0 grams
  • Pollock - 0.9 grams
  • Flounder or sole - 0.9 grams
  • Whiting - 0.9 grams
  • Rockfish - 0.8 grams
  • Halibut - 0.8 grams
  • Sardines, in vegetable oils (3 ounces) - 0.8 grams
  • Tuna, white, canned (3 ounces) - 0.7 grams
  • Scallops - 0.6 grams
  • Perch, ocean - 0.6 grams
  • Cod, Pacific - 0.5 grams
  • Tuna, fresh - 0.5 grams
  • Crab, blue (3 ounces) - 0.4 grams
  • Haddock - 0.4 grams
  • Catfish, wild - 0.4 grams
  • Fish sticks (six) - 0.4 grams
  • Cod, Atlantic - 0.3 grams
  • Crab, Dungeness (3 ounces) - 0.3 grams
  • Shrimp (3 ounces) - 0.3 grams
  • Catfish, farmed - 0.3 grams
  • Tuna, light, canned (3 ounces) - 0.2 grams
  • Clams (3 ounces) - 0.2 grams
  • Crayfish (3 ounces) - 0.2 grams
  • Lobster (3 ounces) - 0.1 grams
Link


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