Updated 12:46 PM Aug 15, 2012
DALLAS - Here's another reason to know your blood type - it might be a clue to your risk of heart disease.
People who have blood types A, B, or AB have a slightly higher
risk of heart disease compared to those with type O, the most common
kind, according to research released yesterday.
Those who
know they are at higher risk may be more motivated to make changes to
lower their chances of heart disease, said Dr Lu Qi, senior author of
the study from Harvard School of Public Health in Boston.
"We cannot change blood type but we can change lifestyle," said Dr Lu,
who led a study released last year that showed blood type may affect
stroke risk.
The new study involved about 90,000 men and
women in two observational health studies that cover more than 20 years.
Combined, 4,070 people developed heart disease. The researchers
considered age and other factors like diet, drinking, family history of
heart attacks that could contribute to heart disease.
The increased risk for type A was 8 per cent; type B, 11 per cent; and type AB, 20 per cent.
While the study did not examine how blood type may affect heart
disease risk, it noted that research has shown some characteristics of
different types may be a factor. For instance, some research suggests
that blood types might affect cholesterol levels or the risk of
developing blood clots.
The findings were published in the American Heart Association journal Arteriosclerosis, Thrombosis and Vascular Biology.
A doctor not involved in the study cautioned that the increased
risk for non-O blood types is modest, and that other risk factors like
smoking have a bigger impact.
"Most of things that are this
modest, most of the time they don't meaningfully change how you'd think
about your risk overall," said Dr Amit Khera, director of the
Preventive Cardiology Program at the University of Texas Southwestern
Medical Center in Dallas.
"This shouldn't cause much alarm for most of the population," he added.
No matter what blood type, Harvard's Dr Lu said everyone should
pay attention to risk factors they can change, including smoking,
weight, high cholesterol, high blood pressure and a sedentary lifestyle.
Type O is the most common blood type, followed by A, B and AB.
About 45 percent of whites, 51 per cent of blacks, 57 per cent of
Hispanics and 40 per cent of Asians have blood type O, according to the
American Red Cross.
Type A: 40 per cent of whites, 26 per cent of blacks, 31 per cent of Hispanics and 28 per cent of Asians.
Type B: 11 per cent of whites, 19 per cent of blacks, 10 per cent of Hispanics and 25 per cent of Asians.
Type AB: 4 per cent of white and blacks, 2 per cent of Hispanics and 7 per cent of Asians. AP
PS:
How true, I don't know.
I do know that one must look at their diet and lifestyle.
But when one will die, is another thing.