Health Highlights: March 26, 2009

ByABC News
March 26, 2009, 5:02 PM

Mar. 27 -- Here are some of the latest health and medical news developments, compiled by editors of HealthDay:

Experts Put Worldwide Cost of Dementia at $315.4 Billion

Worldwide prevalence of dementia may be much higher than previously thought, costing societies around the globe an estimated $315.4 billion, say scientists attending the Alzheimer's Disease International conference this week in Singapore.

Health-care and social services systems in developed and developing countries are under strain dealing with what the experts said was a "greying of the world." Projections indicate as many as 29.4 million people suffer from Alzheimer's or other forms of dementia, the scientists reported in a news release about the conference issued Thursday. And, worldwide prevalence of dementia may quadruple to almost 120 million people by 2050, they added.

Treating worldwide dementia includes $105 billion for informal care -- non-professional care usually provided by families -- that makes up 37 percent of the total dollars. Seventy-seven percent of dementia treament costs occurred in the world's more developed regions, according to the news release.

"In light of the rapidly growing future prevalence estimates, in particular in less developed regions, the economic impact of dementia is a great challenge for every society," Dr. Anders Wimo, of the Alzheimer's Disease Research Center at the Karolinska Institutet, in Stockholm, said in the news release.

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U.S. Halts Trial of Concentrated Saline Solution for Shock

A clinical trial studying the use of concentrated saline solution in trauma patients suffering from severe shock due to severe bleeding has been halted early by the U.S. National Heart, Lung, and Blood Institute because there was no benefit to patients.

In the study, the solution was given to patients as they rode in ambulances to hospital. But patients who received the concentrated saline solution were no more likely to survive than those who received a normal saline solution.