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MyHealthNewsDaily
A woman's risk of having a heart attack may begin to rise even before she is born, a new study suggests, and the findings may help researchers better understand the nature of heart disease in women.
The study found women's risk of having a heart attack increased more than eight times if they had changes in certain genes; these changes were previously found to be brought on by stress experienced in the womb, such as not getting enough nutrients.
"Health really starts in the womb," said study researcher Bas Heijmans, a molecular epidemiologist at Leiden University Medical Center in The Netherlands.
The findings support the idea that conditions during early life, such as the habits of a mother during pregnancy, influence her baby's risk of later developing heart disease, Heijmans said. Ultimately, the researchers would like to find genetic "signatures " that can tell the tale of someone's early life, such as an exposure to alcohol or cigarette smoke. Those signatures could then be used as markers for the persons' risk of disease later in life, Heijmans said.
The findings are published in the Nov. 17 in the International Journal of Epidemiology.
DNA in early life
The study involved 1,654 participants ages 70 to 82 who hadn't had a heart attack before the study's start. After three years, 122 people had suffered a heart attack. The researchers compared the DNA of these individuals to that of 126 participants who had not experienced a heart attack, but were similar in age and other characteristics.
The researchers looked for changes, called epigenetic changes, in six genes known to be influenced by the in utero environment. During such a change, a chemical "tag" is added to a section of DNA.
They found epigenetic changes in two of the genes were associated with an increased risk of heart attack. Women with a tag on one gene were 2.8 times more likely to have a heart attack, and women with a tag on both genes were 8.6 times more likely to have a heart attack, compared with women who didn't have these changes.
However, more work is needed to validate the results. The new study was conducted in adults, so the researchers don’t know exactly what experiences the participants had during the prenatal period.
Men and women
No association between changes in the genes and heart attack risk was found for men. The researchers aren't sure why this is,but it could be that men tend to have heart attacks at earlier ages than the participants included in the study, masking the effect of the gene changes in the study group, Heijmans said.
Because the study was small, these estimates of increased risk for women should be interpreted with caution, Heijmans said. Larger studies that included a wider range of age groups are needed to determine more accurate risk estimates, Heijmans said.
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This is probably more junk science hyped by the most ignorant news journalists in the world.
So maybe women who diet during pregnancy are putting their daughters at risk for heart disease? Someone should tell the obstetricians who harp on pregnant women not to gain weight so they won't have obese babies.
Baloney.
In October, HPV was giving women heart attacks. A couple of weeks ago, it was soft drinks. Now it's mom......
err....the original paper uses famine not "Dieting" as a target for this change, and the change is a less methylation on a gene that is known to cause heart disease. i don't think this is "junk science" so much as it is "junk reporting."
Especially if she is in the womb of a woman who believes in abortion.