Thursday, October 23, 2008
Food Allergies Increasing in US kids according to study
By MIKE STOBBE, AP Medical Writer – Thu Oct 23, 1:10 am ET
Food allergies in American children seem to be on the rise, now affecting about 3 million kids, according to the first federal study of the problem.
Experts said that might be because parents are more aware and quicker to have their kids checked out by a doctor.
About 1 in 26 children had food allergies last year, the Centers for Disease Control and Prevention reported Wednesday. That's up from 1 in 30 kids in 1997.
The 18 percent increase is significant enough to be considered more than a statistical blip, said Amy Branum of the CDC, the study's lead author.
Nobody knows for sure what's driving the increase. A doubling in peanut allergies — noted in earlier studies — is one factor, some experts said. Also, children seems to be taking longer to outgrow milk and egg allergies than they did in decades past.
But also figuring into the equation are parents and doctors who are more likely to consider food as the trigger for symptoms like vomiting, skin rashes and breathing problems.
"A couple of decades ago, it was not uncommon to have kids sick all the time and we just said 'They have a weak stomach' or 'They're sickly,'" said Anne Munoz-Furlong, chief executive of the Food Allergy & Anaphylaxis Network, a Virginia-based advocacy organization.
Parents today are quicker to take their kids to specialists to check out the possibility of food allergies, said Munoz-Furlong, who founded the nonprofit in 1991.
The CDC results came from an in-person, door-to-door survey in 2007 of the households of 9,500 U.S. children under age 18.
When asked if a child in the house had any kind of food allergy in the previous 12 months, about 4 percent said yes. The parents were not asked if a doctor had made the diagnosis, and no medical records were checked. Some parents may not know the difference between immune system-based food allergies and digestive disorders like lactose intolerance, so it's possible the study's findings are a bit off, Branum said.
However, the study's results mirror older national estimates that were extrapolated from smaller, more intensive studies, said Dr. Hugh Sampson, a food allergy researcher at the Mount Sinai School of medicine.
"This tells us those earlier extrapolations were fairly close," Sampson said.
The CDC study did not give a breakdown of which foods were to blame for the allergies. Other research suggests that about 1 in 40 Americans will have a milk allergy at some point in their lives, and 1 in 50 percent will be allergic to eggs. Most people outgrow these allergies in childhood.
About 1 in 50 are allergic to shellfish and nearly 1 in 100 react to peanuts, allergies that generally persist for a lifetime, according to Sampson.
Some people have more than one food allergy, he said, explaining why the overall food allergy prevalence is about 4 percent.
Children with food allergies also were more likely to have asthma, eczema and respiratory problems than kids without food allergies, the CDC study found, confirming previous research.
The study also found that the number of children hospitalized for food allergies was up. The number of hospital discharges jumped from about 2,600 a year in the late 1990s to more than 9,500 annually in recent years, the CDC results showed.
Also, Hispanic children had lower rates of food allergies than white or black children — the first such racial/ethnic breakdown in a national study.
The reason for that last finding may not be genetics, said Munoz-Furlong. She is Hispanic and said people in her own family have been unwilling to consider food allergies as the reason for children's illnesses. "It's a question of awareness," she said.
___
On the Net:
The CDC report: http://www.cdc.gov/nchs
10 Things the Food Industry Doesn't Want You to Know
By Adam Voiland – Mon Oct 20, 5:31 pm ET
Two nutrition experts argue that you can't take marketing campaigns at face value
With America's obesity problem among kids reaching crisis proportions, even junk food makers have started to claim they want to steer children toward more healthful choices. In a study released earlier this year, the Centers for Disease Control and Prevention reported that about 32 percent of children were overweight but not obese, 16 percent were obese, and 11 percent were extremely obese. Food giant PepsiCo, for example, points out on its website that "we can play an important role in helping kids lead healthier lives by offering healthy product choices in schools." The company highlights what it considers its healthier products within various food categories through a "Smart Spot" marketing campaign that features green symbols on packaging. PepsiCo's inclusive criteria--explained here--award spots to foods of dubious nutritional value such as Diet Pepsi, Cap'n Crunch cereal, reduced-fat Doritos, and Cheetos, as well as to more nutritious products such as Quaker Oatmeal and Tropicana Orange Juice.
But are wellness initiatives like Smart Spot just marketing ploys? Such moves by the food industry may seem to be a step in the right direction, but ultimately makers of popular junk foods have an obligation to stockholders to encourage kids to eat more--not less--of the foods that fuel their profits, says David Ludwig, a pediatrician and the co-author of a commentary published in this week's Journal of the American Medical Association that raises questions about whether big food companies can be trusted to help combat obesity. Ludwig and article co-author Marion Nestle, a professor of nutrition at New York University, both of whom have long histories of tracking the food industry, spoke with U.S. News and highlighted 10 things that junk food makers don't want you to know about their products and how they promote them.
1. Junk food makers spend billions advertising unhealthy foods to kids.
According to the Federal Trade Commission, food makers spend some $1.6 billion annually to reach children through the traditional media as well the Internet, in-store advertising, and sweepstakes. An article published in 2006 in the Journal of Public Health Policy puts the number as high as $10 billion annually. Promotions often use cartoon characters or free giveaways to entice kids into the junk food fold. PepsiCo has pledged that it will advertise only "Smart Spot" products to children under 12.
2. The studies that food producers support tend to minimize health concerns associated with their products.
In fact, according to a review led by Ludwig of hundreds of studies that looked at the health effects of milk, juice, and soda, the likelihood of conclusions favorable to the industry was several times higher among industry-sponsored research than studies that received no industry funding. "If a study is funded by the industry, it may be closer to advertising than science," he says.
3. Junk food makers donate large sums of money to professional nutrition associations.
The American Dietetic Association, for example, accepts money from companies such as Coca-Cola, which get access to decision makers in the food and nutrition marketplace via ADA events and programs, as this release explains. As Nestle notes in her blog and discusses at length in her book Food Politics, the group even distributes nutritional fact sheets that are directly sponsored by specific industry groups. This one, for example, which is sponsored by an industry group that promotes lamb, rather unsurprisingly touts the nutritional benefits of lamb. The ADA's reasoning: "These collaborations take place with the understanding that ADA does not support any program or message that does not correspond with ADA's science-based healthful-eating messages and positions," according to the group's president, dietitian Martin Yadrick. "In fact, we think it's important for us to be at the same table with food companies because of the positive influence that we can have on them."
4. More processing means more profits, but typically makes the food less healthy.
Minimally processed foods such as fresh fruits and vegetables obviously aren't where food companies look for profits. The big bucks stem from turning government-subsidized commodity crops--mainly corn, wheat, and soybeans--into fast foods, snack foods, and beverages. High-profit products derived from these commodity crops are generally high in calories and low in nutritional value.
5. Less-processed foods are generally more satiating than their highly processed counterparts.
Fresh apples have an abundance of fiber and nutrients that are lost when they are processed into applesauce. And the added sugar or other sweeteners increase the number of calories without necessarily making the applesauce any more filling. Apple juice, which is even more processed, has had almost all of the fiber and nutrients stripped out. This same stripping out of nutrients, says Ludwig, happens with highly refined white bread compared with stone-ground whole wheat bread.
6. Many supposedly healthy replacement foods are hardly healthier than the foods they replace.
In 2006, for example, major beverage makers agreed to remove sugary sodas from school vending machines. But the industry mounted an intense lobbying effort that persuaded lawmakers to allow sports drinks and vitamin waters that--despite their slightly healthier reputations--still can be packed with sugar and calories.
7. A health claim on the label doesn't necessarily make a food healthy.
Health claims such as "zero trans fats" or "contains whole wheat" may create the false impression that a product is healthy when it's not. While the claims may be true, a product is not going to benefit your kid's health if it's also loaded with salt and sugar or saturated fat, say, and lacks fiber or other nutrients. "These claims are calorie distracters," adds Nestle. "They make people forget about the calories." Dave DeCecco, a spokesperson for PepsiCo, counters that the intent of a labeling program such as Smart Spot is simply to help consumers pick a healthier choice within a category. "We're not trying to tell people that a bag of Doritos is healthier than asparagus. But, if you're buying chips, and you're busy, and you don't have a lot of time to read every part of the label, it's an easy way to make a smarter choice," he says.
8. Food industry pressure has made nutritional guidelines confusing.
As Nestle explained in Food Politics, the food industry has a history of preferring scientific jargon to straight talk. As far back as 1977, public health officials attempted to include the advice "reduce consumption of meat" in an important report called Dietary Goals for the United States. The report's authors capitulated to intense pushback from the cattle industry and used this less-direct and more ambiguous advice: "Choose meats, poultry, and fish which will reduce saturated fat intake." Overall, says Nestle, the government has a hard time suggesting that people eat less of anything.
9. The food industry funds front groups that fight antiobesity public health initiatives.
Unless you follow politics closely, you wouldn't necessarily realize that a group with a name like the Center for Consumer Freedom (CCF) has anything to do with the food industry. In fact,Ludwig and Nestle point out, this group lobbies aggressively against obesity-related public health campaigns--such as the one directed at removing junk food from schools--and is funded, according to the Center for Media and Democracy, primarily through donations from big food companies such as Coca-Cola, Cargill, Tyson Foods, and Wendy's.
10. The food industry works aggressively to discredit its critics.
According to the new JAMA article, the Center for Consumer Freedom boasts that "[our strategy] is to shoot the messenger. We've got to attack [activists'] credibility as spokespersons." Here's the group's entry on Marion Nestle.
The bottom line, says Nestle, is quite simple: Kids need to eat less, include more fruits and vegetables, and limit the junk food.
Two nutrition experts argue that you can't take marketing campaigns at face value
With America's obesity problem among kids reaching crisis proportions, even junk food makers have started to claim they want to steer children toward more healthful choices. In a study released earlier this year, the Centers for Disease Control and Prevention reported that about 32 percent of children were overweight but not obese, 16 percent were obese, and 11 percent were extremely obese. Food giant PepsiCo, for example, points out on its website that "we can play an important role in helping kids lead healthier lives by offering healthy product choices in schools." The company highlights what it considers its healthier products within various food categories through a "Smart Spot" marketing campaign that features green symbols on packaging. PepsiCo's inclusive criteria--explained here--award spots to foods of dubious nutritional value such as Diet Pepsi, Cap'n Crunch cereal, reduced-fat Doritos, and Cheetos, as well as to more nutritious products such as Quaker Oatmeal and Tropicana Orange Juice.
But are wellness initiatives like Smart Spot just marketing ploys? Such moves by the food industry may seem to be a step in the right direction, but ultimately makers of popular junk foods have an obligation to stockholders to encourage kids to eat more--not less--of the foods that fuel their profits, says David Ludwig, a pediatrician and the co-author of a commentary published in this week's Journal of the American Medical Association that raises questions about whether big food companies can be trusted to help combat obesity. Ludwig and article co-author Marion Nestle, a professor of nutrition at New York University, both of whom have long histories of tracking the food industry, spoke with U.S. News and highlighted 10 things that junk food makers don't want you to know about their products and how they promote them.
1. Junk food makers spend billions advertising unhealthy foods to kids.
According to the Federal Trade Commission, food makers spend some $1.6 billion annually to reach children through the traditional media as well the Internet, in-store advertising, and sweepstakes. An article published in 2006 in the Journal of Public Health Policy puts the number as high as $10 billion annually. Promotions often use cartoon characters or free giveaways to entice kids into the junk food fold. PepsiCo has pledged that it will advertise only "Smart Spot" products to children under 12.
2. The studies that food producers support tend to minimize health concerns associated with their products.
In fact, according to a review led by Ludwig of hundreds of studies that looked at the health effects of milk, juice, and soda, the likelihood of conclusions favorable to the industry was several times higher among industry-sponsored research than studies that received no industry funding. "If a study is funded by the industry, it may be closer to advertising than science," he says.
3. Junk food makers donate large sums of money to professional nutrition associations.
The American Dietetic Association, for example, accepts money from companies such as Coca-Cola, which get access to decision makers in the food and nutrition marketplace via ADA events and programs, as this release explains. As Nestle notes in her blog and discusses at length in her book Food Politics, the group even distributes nutritional fact sheets that are directly sponsored by specific industry groups. This one, for example, which is sponsored by an industry group that promotes lamb, rather unsurprisingly touts the nutritional benefits of lamb. The ADA's reasoning: "These collaborations take place with the understanding that ADA does not support any program or message that does not correspond with ADA's science-based healthful-eating messages and positions," according to the group's president, dietitian Martin Yadrick. "In fact, we think it's important for us to be at the same table with food companies because of the positive influence that we can have on them."
4. More processing means more profits, but typically makes the food less healthy.
Minimally processed foods such as fresh fruits and vegetables obviously aren't where food companies look for profits. The big bucks stem from turning government-subsidized commodity crops--mainly corn, wheat, and soybeans--into fast foods, snack foods, and beverages. High-profit products derived from these commodity crops are generally high in calories and low in nutritional value.
5. Less-processed foods are generally more satiating than their highly processed counterparts.
Fresh apples have an abundance of fiber and nutrients that are lost when they are processed into applesauce. And the added sugar or other sweeteners increase the number of calories without necessarily making the applesauce any more filling. Apple juice, which is even more processed, has had almost all of the fiber and nutrients stripped out. This same stripping out of nutrients, says Ludwig, happens with highly refined white bread compared with stone-ground whole wheat bread.
6. Many supposedly healthy replacement foods are hardly healthier than the foods they replace.
In 2006, for example, major beverage makers agreed to remove sugary sodas from school vending machines. But the industry mounted an intense lobbying effort that persuaded lawmakers to allow sports drinks and vitamin waters that--despite their slightly healthier reputations--still can be packed with sugar and calories.
7. A health claim on the label doesn't necessarily make a food healthy.
Health claims such as "zero trans fats" or "contains whole wheat" may create the false impression that a product is healthy when it's not. While the claims may be true, a product is not going to benefit your kid's health if it's also loaded with salt and sugar or saturated fat, say, and lacks fiber or other nutrients. "These claims are calorie distracters," adds Nestle. "They make people forget about the calories." Dave DeCecco, a spokesperson for PepsiCo, counters that the intent of a labeling program such as Smart Spot is simply to help consumers pick a healthier choice within a category. "We're not trying to tell people that a bag of Doritos is healthier than asparagus. But, if you're buying chips, and you're busy, and you don't have a lot of time to read every part of the label, it's an easy way to make a smarter choice," he says.
8. Food industry pressure has made nutritional guidelines confusing.
As Nestle explained in Food Politics, the food industry has a history of preferring scientific jargon to straight talk. As far back as 1977, public health officials attempted to include the advice "reduce consumption of meat" in an important report called Dietary Goals for the United States. The report's authors capitulated to intense pushback from the cattle industry and used this less-direct and more ambiguous advice: "Choose meats, poultry, and fish which will reduce saturated fat intake." Overall, says Nestle, the government has a hard time suggesting that people eat less of anything.
9. The food industry funds front groups that fight antiobesity public health initiatives.
Unless you follow politics closely, you wouldn't necessarily realize that a group with a name like the Center for Consumer Freedom (CCF) has anything to do with the food industry. In fact,Ludwig and Nestle point out, this group lobbies aggressively against obesity-related public health campaigns--such as the one directed at removing junk food from schools--and is funded, according to the Center for Media and Democracy, primarily through donations from big food companies such as Coca-Cola, Cargill, Tyson Foods, and Wendy's.
10. The food industry works aggressively to discredit its critics.
According to the new JAMA article, the Center for Consumer Freedom boasts that "[our strategy] is to shoot the messenger. We've got to attack [activists'] credibility as spokespersons." Here's the group's entry on Marion Nestle.
The bottom line, says Nestle, is quite simple: Kids need to eat less, include more fruits and vegetables, and limit the junk food.
Tuesday, October 21, 2008
Healthy Support for your Eyes
The carotenoids lutein and zeaxanthin are most commonly linked to protection from age-related macular degeneration (AMD). In a new study conducted at the University of Georgia, lutein and zeaxanthin were found to reduce the harmful effects of glare on a test group of people with normal eyesight.
Lutein and zeaxanthin may improve visual performance and reduce the effects of glare
Healthy subjects with an average age of 23.9 were assigned to receive daily supplements of lutein (10 mg) and zeaxanthin (2 mg) for six months. The subjects' eyes were then tested for the effects of glare as experienced in everyday situations, including being outdoors on bright days, lengthy sessions of looking at a computer monitor, and nighttime exposure to oncoming headlights.
Following six months of supplementation, the participant's average macular pigment optical density (MPOD) increased significantly from the average value at the beginning of the study. MPOD is a measure of the eye's ability to filter short-wave light.
After testing the subjects for their performance in visual tasks following glare, researchers concluded that four to six months of supplementation with lutein and zeaxanthin significantly reduced the detrimental effects of the exposure and improved visual performance.
Optom Vis Sci 2008 Feb;85(2):82-8
Subscribe to:
Posts (Atom)