Report: 8 million born with birth defects yearly

updated 7:38 p.m. ET Jan. 30, 2006

WASHINGTON - About 8 million children worldwide are born every year with serious birth defects, many of them dying before age 5 in a toll largely hidden from view, the March of Dimes says.

Most birth defects occur in poor countries, where babies can languish with problems easily fixed or even prevented in wealthier nations, according to research released Monday by the organization.

But the researchers said some innovative programs in Iran and Chile show that effective preventions don’t have to be costly.

Indeed, about 70 percent of birth defects could be either prevented, repaired or ameliorated, they concluded.

“We were surprised by the toll,” said epidemiologist Christopher Howson with the March of Dimes, which sponsored the five-year project after doctors complained that birth defects often are ignored as a public health problem.

“It’s like the tip of an iceberg that is rising out of the ocean,” noticed only after infant mortality from other causes drops, he said.

Specialists said the report focuses much-needed attention on a concern of every parent-to-be.

“Most people think of birth defects as something that is not preventable,” said Dr. Jose Cordero, the U.S. assistant surgeon general and birth defects chief at the Centers for Disease Control and Prevention. “There are great opportunities to ensure that babies are born healthy.”

Some 7.9 million children a year are born with serious birth defects caused at least partly by a genetic flaw, such as heart defects, spina bifida and other neural tube defects, sickle cell anemia and Down syndrome.

Post-conception problems
Undoubtedly hundreds of thousands more are born with defects caused not by genes but by post-conception problems: mothers infected with rubella or syphilis, which can damage their babies’ brains; certain medications or alcohol; lack of dietary iodine. But too few countries count those defects for a good estimate.

At least 3.3 million children under age 5 die each year because of birth defects, and millions more are mentally or physically disabled.

Prevalence ranges from a high of 82 defects per 1,000 live births in Sudan to a low of 39.7 per 1,000 in France. The researchers cautioned that the data aren’t precise enough for detailed country-by-country comparisons — but cited poor maternal health care, a higher percentage of older mothers and greater frequency of marriage between relatives as leading risks in low-and middle-income countries.

Additionally, populations from Africa, the Eastern Mediterranean and Southeast Asia are most at risk of the common inherited diseases thalassemia, sickle cell and the metabolic disease G6PD, regions less likely to offer genetic testing that reveal at-risk couples.

The report takes no stand on abortion. But it also found that Down syndrome is roughly twice as common in poorer countries, which typically lack prenatal testing, while half of affected pregnancies in Western Europe are terminated following prenatal diagnosis.

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