Scientists have claimed that they can identify dyslexia even before children start school, long before they become labeled as poor students and begin to lose confidence in themselves.

“We call it the dyslexia paradox,” said Nadine Gaab of the Laboratories of Cognitive Neuroscience at Children’s, whose study was published in Proceedings of the National Academy of Sciences.

“Often, by the time they get a diagnosis, they usually have experienced three years of peers telling them they are stupid, parents telling them they are lazy. We know they have reduced self esteem. They are really struggling,” Gaab said in a telephone interview.

“The beauty is spoken language can present before written language so people can look for symptoms,” said Dr. Sally Shaywitz, a director of the Center for Dyslexia and Creativity at Yale University.

Signs of early dyslexia can include difficulty with rhyming, mispronouncing words or confusing similar-sounding words.

A new study has suggested that people engaging in activities such as reading and playing games throughout their lives may be lowering levels of a protein in their brains that is linked to Alzheimer’s disease.

“Staying cognitively active over the lifetime may reduce the risk of Alzheimer’s by preventing the accumulation of Alzheimer’s-related pathology,” said study author Susan Landau, a research scientist at the Helen Wills Neuroscience Institute at the University of California, Berkeley.

“Some of the literature has hypothesized this finding, but this is the first study to report that lifetime cognitive activity is directly linked to amyloid deposition in the brain,” she said. “We think that cognitive activity is probably one of a variety of lifestyle practices — occupational, recreational and social activities — that may be important.”

The report was published in the Jan. 23 online edition of the Archives of Neurology.

A new study has found that an experimental anti-blood-clotting drug may serve as a replacement for other drugs such as Plavix in the days before heart surgery.

The study authors reported that the intravenous drug cangrelor appears to have the potential to serve as a “bridge” medication for heart patients to take in the several days before procedures like coronary artery bypass grafting.

“This drug is investigational, so it is not yet an option for patients to ask about,” Dr. Gregg Stone, a heart specialist and professor of medicine at Columbia University in New York City pointed out, “but if [the U.S. Food and Drug Administration] approved it, it would likely be widely used.”

The report was published in the Jan. 18 issue of the Journal of the American Medical Association.

Global health experts said on Tuesday that the UN General Assembly should devote a special session to mental illness and drug abuse that may wreak havoc in global societies and economies.

“The time has come for recognition at the highest levels of global development, namely the UN General Assembly, of the urgent need for a global strategy to address the global burden of MNS disorders,” said the article in PLoS Medicine.

Lead authors were Vikram Patel from the London School of Hygiene and Tropical Medicine and Judith Bass from Johns Hopkins School of Public Health in the United States.

“Depressive disorders markedly increase the risk for noncommunicable diseases such as diabetes, coronary artery disease, stroke, and dementia,” said the article.

“Conflict, displacement, poverty, gender-based violence, and other social determinants of ill health increase the risk for MNS disorders,” it added.

According to an international study, children who get more exercise also tend to do better in school.

The findings come as schools in the United States, in general, cut physical activity time in favor of more academic test preparation.

Amika Singh, who worked on the study, said, “Maybe it’s an activity break, stand up every half an hour in class and do something,” said Singh, from VU University Medical Center in Amsterdam.

“It might mean going to school by bike … Any kind of physical activity you can think of. It doesn’t mean only the physical education standard class.”

The findings were published in the Archives of Pediatrics & Adolescent Medicine.