Strokes are increasingly hitting younger people and the
incidence of the crippling condition worldwide could double by 2030, warns the
first global analysis of the problem.
Though the chances of a stroke jump dramatically with age,
the growing number of younger people with worrying risk factors such as bulging
waistlines, diabetes and high blood pressure means they are becoming
increasingly susceptible.
Worldwide, stroke is the second-leading cause of death after
heart disease and is also a big contributor to disability.
Most strokes occur when a clot blocks the blood supply to
the brain. Patients often experience symptoms including a droopy face, the
inability to lift their arms and garbled speech. If not treated quickly,
patients can be left with long-term side effects, including speech and memory
problems, paralysis and the loss of some vision.
Scientists combed through more than 100 studies from 1990 to
2010 studying stroke patients across the world and also used modeling
techniques when there wasn't enough data. They found the incidence of stroke
has jumped by a quarter in people aged 20 to 64 and that those patients make up
almost one-third of the total number of strokes.
Researchers said most strokes still occur in the elderly and
that the numbers of people suffering strokes are still increasing as the
world's population ages.
"Some of the increase we will see in strokes is
unavoidable because it has to do with people aging, but that doesn't mean we
should give up," said Majid Ezzati of Imperial College London, one of the
study's authors. Ezzati said countries should focus on reducing smoking rates
further, aggressively controlling blood pressure and improving eating habits.
Ezzati said developing countries such as Iran and South
Africa that have set up national systems to monitor maternal and child health
are a good model for similar initiatives that could help keep stroke risk
factors, such as high blood pressure, in check.
Ezzati and colleagues found the death rate from strokes
dropped 37 percent in developed countries and 20 percent in developing
countries, largely because of better diagnosis and treatment.
Stroke prevalence was highest in East Asia, North America,
Europe and Australia. It was lowest in Africa and the Middle East -though
researchers said people in those regions may be dying of other ailments before
they get old enough to have a stroke.
In the U.S., doctors have already noted an alarming increase
in strokes among young and middle-aged Americans, while the number has been
dropping in older people.
The research was paid for by the Bill & Melinda Gates
Foundation and published online Thursday in the journal Lancet.
"Young people think stroke is only a problem of the elderly,
but we need to educate them," said Dr. Yannick Bejot of the University
Hospital of Dijon in France, who co-wrote an accompanying commentary. He added
that using illegal drugs such as marijuana and cocaine also boosts the chance
of a stroke.
Source : foxnews.com
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