Showing posts with label everyone?. Show all posts
Showing posts with label everyone?. Show all posts

Monday, July 2, 2012

Going gluten-free: Is the diet a good fit for everyone?

ScienceDaily (June 28, 2012) — One of the latest trends in the food market and among celebrities is going gluten-free. Snack giant Frito-Lay has announced it will introduce new gluten-free labels and products, and Miley Cyrus has credited her recent weight loss to a gluten-free diet.

See Also:Health & MedicineDiet and Weight LossNutritionCholesterolPlants & AnimalsFoodAgriculture and FoodBiologyLiving WellReferenceGlutenGluten-free, casein-free dietMeat analogueOat

Experts at Kansas State University say going gluten-free may be a good choice for some individuals, but that just because a product's label says it's gluten-free doesn't means that it's healthy.

Going gluten-free was an obvious choice for Kathryn Deschenes, a Kansas State University master's student in food science from Ellsworth. She has celiac disease, which runs in her family. The disease is a digestive disorder triggered by eating gluten, a protein found in wheat, barley and rye. Those with celiac disease often experience symptoms like nausea and diarrhea.

"It can have funny symptoms like depression, acid reflux and it can stunt children's growth," Deschenes said.

For the 1 percent of the population with celiac disease, giving up gluten products usually takes away those symptoms. Deschenes went gluten-free in high school and likes the recent gluten-free trend.

"It's been beneficial for the market," she said, adding that it means more companies are producing gluten-free products and labeling their products as such.

But are products labeled "gluten-free" healthier?

Take a good hard look at those labels, recommends Mark Haub, associate professor and interim head of Kansas State University's department of human nutrition in the College of Human Ecology. Haub studies whole grains and dietary fiber.

"Just because a product says it's gluten-free doesn't mean it's healthy," he said.

The gluten-free product likely contains as many calories as gluten options, Haub said, because a gram of sorghum, corn or rice flour appears to be metabolically similar to a gram of wheat flour.

Haub said that gluten isn't bad for the average person.

"People have been eating wheat, rye and barley for thousands of years, and there are people who live to be 100 who eat wheat products and don't seem to exhibit any types of health issues," he said.

Gluten-free diets are now being adopted by people without celiac disease. Haub said as long as they do their research about the diet, he's fine with the trend.

"I'm totally supportive of people selecting and choosing lifestyle habits that best suit their needs and preferences, and this would fit that category," he said.

If someone eats more varieties of vegetables and fruits and engages in portion control of other foods, then this type of gluten-free living may elicit health benefits, he said.

Deschenes cautions that gluten-free is not necessarily a weight-loss program and can be a bad diet if you aren't aware of the things it lacks, such as a sufficient amount of fiber.

To help add more fiber to her diet, Deschenes buys breads with more fiber. She also said you can add flax seed to your diet, which is high in fiber.

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Monday, April 2, 2012

Gene mapping for everyone? Study says not so fast

Gene scans for everyone? Not so fast. New research suggests that for the average person, decoding your own DNA may not turn out to be a really useful crystal ball for future health.

Today, scientists map entire genomes mostly for research, as they study which genetic mutations play a role in different diseases. Or they use it to try to diagnose mystery illnesses that plague families. It's different from getting a genetic test to see if you carry, say, a particular cancer-causing gene.

But as genome mapping gets faster and cheaper, scientists and consumers have wondered about possible broader use: Would finding all the glitches hidden in your DNA predict which diseases you'll face decades later?

Johns Hopkins University developed a model using registries of thousands of identical twins, who despite their shared genes can develop different diseases. They examined 24 ailments, including different types of cancer, heart disease, diabetes and Alzheimer's.

Under best-case scenarios, most people would be told they had a somewhat increased risk of at least one disease, said Dr. Bert Vogelstein, a Hopkins cancer geneticist and the study's senior author.

But a negative test for most of the rest of the diseases doesn't mean you won't get them. It just means that you're at no more risk than the general population. Those are the findings Vogelstein's team reported Monday in the journal Science Translational Medicine. Why? Cancer, for example, typically doesn't result from inherited genes but from mutations that can form anytime, Vogelstein explained. Many other common diseases are influenced by lifestyle and environment

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