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July 6, 2006

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Prairie Fare: Does Grilled Food Increase Cancer Risks?

By Julie Garden-Robinson,
Food and Nutrition Specialist
NDSU Extension Service

Julie Garden-Robinson
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On a warm, summer day, if you go outside or on a walk, you’re likely to detect the aroma of grilled food wafting through the air. It may make you feel a little hungry, too.

About 80 percent of households have some type of outdoor grill. According to a national survey, taste is what makes people fire up the grill and grab the grilling tongs. Despite the popularity, could there be a health risk that accompanies the great grilled flavor?

According to the Department of Health and Human Services, chemicals sometimes formed during the grilling process have been included on the “reasonably anticipated carcinogens” list since 2002. The chemicals, called “heterocyclic amines” (HCAs) can form when foods high in protein (including meat, fish and poultry) are grilled or broiled over high heat.

Another type of compound linked to cancer risk, called polycyclic aromatic hydrocarbons (PAHS), form when fat drips on charcoal or hot stones, causing flare-ups and smoke formation.

Despite these warnings, don’t put your grill out with the trash or skip the neighborhood grilling party.

To reduce the formation of potentially carcinogenic compounds during grilling, consider these recommendations based on research from the American Institute for Cancer Research and others.

  • Use a marinade, especially one that contains an acidic ingredient, such as lemon juice or vinegar. Researchers have shown that marinating meat as little as 30 minutes can reduce the formation of HCAs by more than 90 percent. Add some garlic and herbs to reduce HCA formation, too. Marinades also add flavor and tenderize less tender cuts of meat.
  • Use a lower heat setting or raise the grate to reduce the intensity of the heat.
  • Consider partially cooking meat in a microwave and immediately “finish” the cooking on the grill to add flavor.
  • Trim visible fat from meat to help prevent flare-ups on the grill.
  • Leave the grilling fork in the house. Use tongs to turn the meat to reduce fat dripping and potential flare-ups and smoke formation. Keep a spray bottle at hand or consider covering the coals or stones with punctured aluminum foil to prevent flare-ups and smoking.
  • Turn food frequently, even if it defies the rules of the “head grill chef” of the house. Flipping meat often lessens the formation of HCAs.
  • Cook smaller portions of meat, such as kabobs, to reduce the amount of time the meat spends on the grill.
  • Trim off any burned parts before serving grilled food.
  • Consider grilled vegetables as a side dish. Because they are very low in protein, HCA formation is not an issue. Colorful vegetables contain antioxidants and other natural cancer-fighting chemicals.

Here’s a marinade recipe adapted from the American Institute for Cancer Research that adds flavor, but few calories. For more information about lowering your risk for cancer, visit its Web site at www.aicr.org.


Classic Marinade for Meat, Poultry and Veggies

1/2 c. white wine vinegar
1 Tbsp. canola oil
1/4 c. finely chopped onion
1 small bay leaf
2 sprigs fresh rosemary, thyme or oregano (or 1/2 tsp. dried herbs)
2 cloves garlic, finely minced
1/2 tsp. freshly ground black pepper
Your choice of 1 pound lean beef or poultry, cut into 2-inch cubes or chunks and/or assorted veggies, such as zucchini, summer squash or peppers

Combine marinade ingredients until well blended. Add meat or poultry and marinate in the refrigerator for at least 30 minutes and up to a few hours. Keep the meat separate from the poultry because they are cooked to different internal temperatures. Cook beef steak to 145 F and poultry to 170 F. Drain and discard the used marinade. Also use the marinade with grilled vegetables, such as zucchini, summer squash or bell peppers. Make separate skewers for meat and vegetables to even cooking time.

Makes four servings. One-fourth of the marinade recipe has about 35 calories and less than 4 grams of fat.

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Source: Julie Garden-Robinson, (701) 231-7187, jgardenr@ndsuext.nodak.edu
Editor: Rich Mattern, (701) 231-6136, richard.mattern@ndsu.nodak.edu


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