Florida QB and 2007 Heisman Trophy winner Tim Tebow is the latest star to suffer a concussion in the tough sport of football. Wildcats defensive end Taylor Wyndham hit hard in the chest on third-and-6 play from the Kentucky 9. As Tebow fell to the ground, the back of his head hit Gators tackle Marcus Gilbert's knee. For now, he appears to be OK, but concussions are a worry in all levels of football, as this new study clearly notes.

Excessive physical strain in dementia care is not so much related to equipment or the resident's body weight as it is due to communication problems and misunderstandings. This is shown in a new study from the Sahlgrenska Academy.

Patients infected with a particular subtype of HIV, the virus that causes AIDS, are more likely to develop dementia than patients with other subtypes, a study led by Johns Hopkins researchers shows. The finding, reported in the September Clinical Infectious Diseases, is the first to demonstrate that the specific type of HIV has any effect on cognitive impairment, one of the most common complications of uncontrolled HIV infection.

Elevated cholesterol levels in midlife – even levels considered only borderline elevated – significantly increase the risk of Alzheimer's disease and vascular dementia later in life, according to a new study by researchers at Kaiser Permanente's Division of Research and the University of Kuopio in Finland. The study appears in the journal Dementia & Geriatric Cognitive Disorders.

A particular class of medication used to treat high blood pressure could protect older adults against memory decline and other impairments in cognitive function, according to a newly published study from Wake Forest University School of Medicine.

The number of people with Alzheimer's and dementia – both new cases and total numbers with the disease – continues to rise among the very oldest segments of the population in contradiction of the conventional wisdom, according to research reported today at the Alzheimer's Association 2009 International Conference on Alzheimer's Disease (ICAD 2009) in Vienna.

A new Mayo Clinic study may help physicians differentially diagnose three common neurodegenerative disorders in the future. The study will be presented at the Alzheimer's Association International Conference on Alzheimer's Disease on July 11 in Vienna.

Side effects associated with several commonly-prescribed dementia drugs may be putting elderly Canadians at risk, says Queen's University Geriatrics professor Sudeep Gill.

There are several risk factors for the development of Alzheimer's disease and vascular dementia. Based on an increasing number of studies linking these risk factors with Vitamin D deficiency, an article in the current issue of the Journal of Alzheimer's Disease by William B. Grant, PhD of the Sunlight, Nutrition, and Health Research Center suggests that further investigation of possible direct or indirect linkages between Vitamin D and these dementias is needed.

If grandma seems to forget things, will she end up demented? These days, memory loss is one of the very few symptoms that may signal which 70-year-olds risk developing dementia. This is shown in a doctoral thesis at the Sahlgrenska Academy at the University of Gothenburg, Sweden.

Researchers at the Yerkes National Primate Research Center, Emory University, developed a test in nonhuman primates that is now using infrared eye tracking to detect mild cognitive impairment (MCI) in humans.

A recent study by Mount Sinai faculty suggests that a gene associated with onset of type-2 diabetes also decreases in Alzheimer's disease dementia cases.