Archives for November 2011

Math Disability Linked to Problem Relating Quantities to Numerals

November 28, 2011 | by

Children who start elementary school with difficulty associating small exact quantities of items with the printed numerals that represent those quantities are more likely to develop a math-related learning disability than are their peers, according to a study supported by the National Institutes of Health.

The children in the study who appeared to have difficulty grasping the fundamental concept of exact numerical quantities — that the printed numeral 3, for example, represents three dots on a page — went on to be diagnosed with math learning disability by fifth grade.

Child with a math problem

Other early factors correlated with a math learning disability were difficulty recalling answers to single-digit addition problems, distractibility in class, and difficulty understanding that more complex math problems can be broken down into smaller problems that can be solved individually.

Tips for a Healthy Thanksgiving

November 22, 2011 | by

Thanksgiving often involves eating a big meal centered around turkey and then retiring to the easy chair or couch for a nap. Turkey contains tryptophan, an amino acid that is a chemical precursor to melatonin, a neurotransmitter known to induce sleepiness. However, while the holidays can be exhausting, scientists say it’s a misbelief to blame turkey for the post-meal nap.

Thanksgiving turkey

Research has shown that, following a large meal, less tryptophan will reach the brain than on an empty stomach. The real culprit is the types and quantity of food you’ve eaten. Blame your sleepiness instead on high-calorie, high glycemic index foods.

Here are a few easy science-based tips to ensure not only a delicious turkey but a healthy Thanksgiving.

Another Nail in the Coffin of the MMR-Autism Link

November 21, 2011 | by

While the alleged link between vaccines — particularly the measles, mumps, and rubella (MMR) vaccine — and autism has been thoroughly discredited in more than 20 well-conducted studies of vaccine side effects [1], fears about the side effects of vaccination nevertheless remain a major factor influencing the healthcare decisions some parents make. This has led to an increasing percentage of unvaccinated children in the U.S. in recent years, which in turn has ramifications for public health.

Brain scans

A recent study published in the Journal of the American Medical Association, however, sheds new light on physiological roots — though not causes — of autism [2], and in so doing rules out the potential for any link between vaccination and development of the disease. In the study, researchers examined the size and number of neurons in the prefrontal cortex of young deceased males with autism, and compared the data to that obtained from young deceased non-autistic males.

The GE Healthymagination Initiative Against Cancer

November 18, 2011 | by

In September, GE and leading healthcare and financial partners launched a new healthymagination initiative focused on accelerating cancer innovation and improving care for 10 million cancer patients around the world by 2020 [1]. The plan was announced in New York by GE’s CEO and Chairman Jeff Immelt to an audience of prominent cancer scientists and researchers, doctors, financial partners and employees of GE Healthcare. The company’s comprehensive initiative combines the strength of GE’s portfolio of integrated cancer technologies with collaboration between GE and new partners and data sources to help clinicians provide better, more personalized care.

GE accelerates cancer fight

The Skinny on Dietary Fats

November 16, 2011 | by

Fat has a bad reputation, both in food and on the body. It’s certainly true that the U.S. has a problem with body fat; according to the U.S. Centers for Disease Control and Prevention (CDC), about two-thirds of adults in the U.S. are overweight, and fully one-third of adults fall into the more serious “obese” category [1]. Still, appropriate amounts of body fat serve valuable roles. These include helping to maintain the immune system and nervous system, protecting body organs and padding areas where the skeleton would otherwise put pressure directly on the skin (such as the soles of the feet).

The skinny on fat

Too much body fat, however, is associated with a number of negative health effects, including increased risk of heart disease, type 2 diabetes, arthritis, and apnea.