Having children is linked to increased risk of heart disease, new study suggests – but don't let that put you off

November 29, 2018 by Clare Oliver-Williams, The Conversation
Rugrats can seriously mess you up. Credit: Kichigin/Shutterstock

Children are stressful. The more children you have, the more stress you have to manage. But that isn't all, having lots of children might raise more than just stress levels. Our latest research suggests having kids might also be linked to an increased risk of getting cardiovascular disease.

This research has come from the Atherosclerosis Risk in Communities (ARIC) study, which followed more than 8,000 women from across the US for 30 years. Researchers found that the more a woman has, the more likely she is to develop disease, strokes and heart failure in later life. Women who had five or more children were 26 percent more likely to have a , stroke or heart failure than women with one or two children.

There could be several reasons why having children could be linked to . A woman's body makes huge, amazing adjustments during pregnancy. It's not just the size of her belly that increases, a woman's heart grows by almost 12 percent by the end of the nine months, which helps deal with the 50 percent increase in the volume of blood that has to be sent around her body.

Those big changes reflect the huge demands placed on a woman's body during pregnancy. Although things return to normal after birth, there may be long-lasting effects.

But it's not just the pregnancy that might have a negative effect. Anyone with children will tell you that they have next to no "me time", between balancing childcare, home life and work. As for a social life? What's that?

And the less time a woman has to take care of herself, to get enough sleep and to relax, the more likely she will be to reach for a quick fix. Grabbing the biscuits to give a sugar hit, having the extra glass of alcohol to relax; it all adds up to a less healthy, but totally understandable, lifestyle.

Not much time for this. Credit: KieferPix/Shutterstock

This doesn't mean that dads get away scot-free; child-related stress is an equal opportunities enemy. A study of more than 200,000 British men found a similar result. Men with four or more children were more likely to have heart disease than men with fewer children.

Does this suggest that not having children is best for the heart? Well, it depends. In the ARIC study, women who had never been pregnant were at lower risk of having heart disease, a stroke or than women with many children. However, women who had no children but had experienced pregnancy loss were 64 percent more likely to develop heart disease than women with one or two children.

Pregnancy loss, of course, is a hugely stressful event that can have psychological effects years after the pregnancy. This stress, along with some that might make pregnancy more challenging, may explain why these were more likely to develop .

And now for the good news

All this research might be enough to put people off having kids forever, but there is good news. Children aren't completely bad for your health. They might not be great for your heart and head, but having children appears to be protective against some cancers. The more children a woman has the less likely she is to get ovarian cancer and some kinds of breast cancer, regardless of whether she breastfeeds.

So don't let this new research put you off having kids. The demands of pregnancy and child-rearing may be bad for the heart, but it seems the break from the regular cycle of hormones during may be good for the reproductive system. Plus, having kids is a great excuse to indulge in your own favourite childhood activities and wrestle with some tough questions, like: "What is time?" And if you have a good answer for that, let me know and I'll pass it on to my five-year-old.

Explore further: Age, race are leading predictors of heart attacks in pregnant women

Related Stories

Age, race are leading predictors of heart attacks in pregnant women

November 8, 2018
Heart attacks in pregnant women are rare, but the number is rising, particularly among older expectant mothers, according to a new study that looked at the most common factors behind the increase.

Years after pregnancy, heart risks track from mother to child

September 26, 2018
A mother can pass down a lot of physical traits to her child, such as her smile, eye color, or the shape of her nose. According to new research, she may also be passing along something not as obvious—a vulnerability for ...

Does a woman's weight gain during pregnancy affect children's bone health?

November 7, 2018
A new study has examined whether managing weight during pregnancy might affect children's bone mass.

CDC: Many children with heart conditions have special needs

October 12, 2018
(HealthDay)—Children with past and current heart conditions have more special health care needs compared with children without heart conditions, according to research published in the Sept. 29 issue of the U.S. Centers ...

Heart attack risk on the rise for pregnant women and death rate remains high

July 18, 2018
The risk of having a heart attack while pregnant, giving birth, or during the two months after delivery, continues to increase for American women, a new study finds.

Pregnant women with heart disease should give birth at no later than 40 weeks gestation

August 25, 2018
Pregnant women with heart disease should give birth at no later than 40 weeks gestation. That is one of the recommendations in the 2018 European Society of Cardiology (ESC) Guidelines for the management of cardiovascular ...

Recommended for you

Early postpartum opioids linked with persistent usage

December 14, 2018
Vanderbilt researchers have published findings indicating that regardless of whether a woman delivers a child by cesarean section or by vaginal birth, if they fill prescriptions for opioid pain medications early in the postpartum ...

Can stem cells help a diseased heart heal itself? Researchers achieve important milestone

December 14, 2018
A team of Rutgers scientists, including Leonard Lee and Shaohua Li, have taken an important step toward the goal of making diseased hearts heal themselves—a new model that would reduce the need for bypass surgery, heart ...

Higher risk of heart attack on Christmas Eve

December 12, 2018
The risk of heart attack peaks at around 10pm on Christmas Eve, particularly for older and sicker people, most likely due to heightened emotional stress, finds a Swedish study in this week's Christmas issue of The BMJ.

Your weight history may predict your heart failure risk

December 12, 2018
In a medical records analysis of information gathered on more than 6,000 people, Johns Hopkins Medicine researchers conclude that simply asking older adult patients about their weight history at ages 20 and 40 could provide ...

Age is the biggest risk for heart disease, but lifestyle and meds have impact

December 12, 2018
Of all the risk factors for heart disease, age is the strongest predictor of potential trouble.

New understanding of mysterious 'hereditary swelling'

December 12, 2018
For the first time ever, biomedical researchers from Aarhus University, Denmark, report cellular defects that lead to a rare disease, hereditary angioedema (HAE), in which patients experience recurrent episodes of swelling ...

0 comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.