Calabresi added that many of the disabilities suffered by MS patients - numbness, tingling, visual impairment, fatigue, weakness and bladder function disturbance - are the result of nerve cell degeneration, so a test that specifically measures nerve cell health is potentially the clearest picture of the status of the disease.

CNN: Can an eye exam detect multiple sclerosis?

Development Program report warned that because of the ravages of the disease, South Africa's economy may be slipping from developing status to underdeveloped.

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People living with HIV bear the burden of having a highly stigmatized disease and they regularly face discrimination simply on the basis of their health status.

WHITEHOUSE: Passing the Senate Health Reform Bill: One Big Step Forward for People Living with HIV/AIDS | The White House

With that status as the number one killer in the country, cardiovascular disease is a big concern for many of us.

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