SEARCH

Entries in Red Meat (3)

Tuesday
May282013

Meat Allergy in Children Linked to Tick Bites

iStockphoto/Thinkstock(NEW YORK) -- A tiny tick might be to blame for a rash of red meat allergies across the United States, researchers say. And the latest study suggests grill-loving kids are just as vulnerable as their grown-up counterparts.

"Nearly 50 percent of the kids in our study ended up in the emergency department," said study author Dr. Scott Commins, an assistant professor of medicine at the University of Virginia in Charlottesville. "Age doesn't seem to really matter in terms of the severity of the reaction."

Commins and colleagues studied 51 kids who had reactions, ranging from rashes to anaphylactic shock, to mammalian meat. And like adults with the bizarre meat allergy, they all had a history of bites from Amblyomma americanum, better known as the lone star tick.

"We were surprised by how many kids were having reactions when we started looking in pediatric clinics for it," said Commins, who first linked the tick to meat allergies in 2009. He believes the bug's saliva can seep into the bite wound, somehow triggering an allergy agonizing enough to convert lifelong carnivores into wary vegetarians.

"People will eat beef, and then anywhere from three to six hours later start having a reaction, anything from hives to full-blown anaphylactic shock," he said. "And most people want to avoid having the reaction, so they try to stay away from the food that triggers it."

Most of the kids in the study developed a rash at the site of the tick bite before reacting to red meat, and all but six of them also tested positive for alpha-gal antibodies -- blood proteins that react to a sugar found in meat. But Commins said it's tough to make a definitive link between the tick and the allergy.

"We're still searching for the mechanism," he said, describing plans to test the theory in mice that were genetically altered to lack alpha-gal. "It's hard to prove."

Allergies are immune reactions to foreign substances, such as pet hair and peanuts. As antibodies attack the substance that caused the reaction, they trigger the release of histamine, a chemical that causes hives and, in severe cases, life-threatening anaphylaxis.

"If a child has an exaggerated skin response to a tick bite, I would make an appointment with an allergist to have a blood test done," said Commins, "especially if the child happens to be one who eats meat."

Other common food allergens include nuts, shellfish, milk, eggs, soy and wheat. Most food allergy sufferers are glad to discover the source of their misery, even if it means upheaval for their diets. But Commins said meat allergies can be hard for brawny barbecuers to swallow.

"Some people are totally destroyed," he said. "Others say, 'Maybe I'm better off without it.'"

But don't despair. Commins said the reaction wanes over time, and that most people are able to return to their meat-eating ways within a period of months.

"It's important to have your blood test redone because it appears that this allergic response goes away over time, which is great news for kids," he said. "Additional tick bites, however, seem to push that response back up relatively quickly. So I would really stress tick bite prevention."

The U.S. Centers for Disease Control and Prevention recommends taking the following steps to prevent tick bites:

- Avoid wooded and bushy areas;

- Walk in the center of trails; Use bug repellents that contain 20 percent or more Deet on the skin;

- Use bug repellants that contain permethrin on clothing;

- Shower as soon as possible after coming indoors;

- Look for ticks on your body, especially under the arms, in and around the ears, inside the belly button, behind the knees, between the legs, around the waist and in the hair;

- Check gear and pets for ticks.

Copyright 2013 ABC News Radio

Monday
Mar122012

Red Meat Tied to Increased Mortality Risk

iStockphoto/Thinkstock(INDIANAPOLIS) -- Eating a single serving of red meat per day may raise the risk of early death, a new study found.

The study, which followed more than 120,000 American men and women, linked daily consumption of unprocessed red meat with a 13-percent increase in mortality risk.

A daily serving of processed meat carried an even bigger risk. Eating one hot dog or two strips of bacon per day was associated with a 20-percent increased risk of death, according to the study.

"It's not really surprising because red meat consumption has been linked to an increased risk of chronic diseases, such as cardiovascular disease and cancer," said Dr. Frank Hu, professor of nutrition and epidemiology at the Harvard School of Public Health and co-author of the study published Monday in the journal Archives of Internal Medicine. "What is surprising is the magnitude of risk associated with very moderate red meat consumption."

Nearly three-quarters of the study participants reported eating one or more daily servings of red meat.

"Habitual, daily consumption of these products is actually very common, both in our study and in the general population," said Hu.

People who ate red meat regularly tended to have other bad health habits, like smoking, drinking alcohol and being physically inactive, according to the study. They also tended to eat fewer fruits and vegetables, which are linked to decreased mortality. But even when Hu and colleagues controlled for those risk factors, the red meat-mortality link stood.

"I think the public health message is pretty straightforward," said Hu. "We should switch from a red meat-based diet to a plant-based diet with healthier protein choices."

The study could not conclude that red meat consumption caused the increased risk of death, but rather that there was an association between the two. But red meat contains compounds known to boost the risk of cardiovascular disease and cancer, such as saturated fat, sodium nitrites and other "chemicals produced during processing and cooking," Hu said.

Swapping red meat for healthy protein sources, such as poultry, fish, legumes and whole grains was linked to a decrease in mortality risk, ranging from 7 percent for fish to 19 percent for nuts.

Copyright 2012 ABC News Radio

Thursday
Aug112011

Can Red Meat Consumption Lead to Diabetes?

Polka Dot Images/Thinkstock(BOSTON) -- Harvard researchers have found a strong link between eating red meat of any kind and risk of developing Type 2 diabetes.

The large long-term study by the Harvard School of Public Health found a 19 percent higher risk for people who eat unprocessed red meat daily -- like steak or hamburger.  Furthermore, they found there was a 51 percent higher risk for those who eat processed red meat -- like a hot dog or sausage -- every day.

The researchers also found that risk of developing Type 2 diabetes is significantly lower if individuals replace red meat with healthier proteins such as low-fat dairy, nuts or whole grains.

The study's findings are published in the American Journal of Clinical Nutrition.

Copyright 2011 ABC News Radio







ABC News Radio