Jul 21

A study has found that people with depression have smaller hippocampal volumes than healthy individuals.

The hippocampus is a brain region involved in learning and memory, spatial navigation, and the evaluation of complex life situations or “contexts”.

However, because in prior studies hippocampal volume was only measured in people once they became depressed, it has been unclear whether a small hippocampus renders a person vulnerable to developing depression, or whether it is a consequence of depression.

A new study has approached that problem by following a large population of elderly individuals over a 10-year period.

Researchers performed an initial imaging scan on subjects to obtain a baseline measurement of their hippocampal volume and then performed follow-up scans 5 and 10 years later.

During this time, they also repeatedly assessed the individuals for both depressive symptoms and depressive disorders.

“We found that persons with a smaller hippocampus were not at higher risk to develop depression. In co

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Tags: Associated Depression , Depression

Jul 21

When the London-based Wellcome Trust announced the first 27 winners of its Investigator Awards last month, Pedro Hallal was the only non-UK researcher on the list.

Hallal, a 31-year-old investigator of the links between physical exercise in mothers and children and life-long health, is based at the Federal University of Pelotas in Brazil. A consultant to the Ministry of Health in Brazilia, his influence has already helped spawn programmes to encourage physical exercise in 1,400 Brazilian cities.

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Jul 20

The Dengue Update is a series of reports on dengue. Our purpose is to provide you with concise, informative updates on global efforts to prevent dengue, and particularly the role the Centers for Disease Control and Prevention (CDC) plays in those efforts.

Tags: Dengue Update , Update

Jul 20

Dr. Stanley Pearle , 92, died at his home in Dallas Thursday.

Pearle founded the Pearle Vision Pearle Vision Latest from The Business Journals Finding fans on Facebook requires strategic planHumana adds LensCrafters, others to planLuxottica teams on vision for the uninsured Follow this company chain of eye-care stores in 1961 in Savannah, Ga., as Pearle Optical. He began franchising the store in 1981. Today, there are 675 in the United States, Canada and Puerto Rico.

Pearl also established the OneSight Research Foundation, which invests in eye research and students pursuing optometry. Since 2007, OneSight has awarded $140,000 in scholarships to 70 students through the Dr.

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Tags: , Vision