76 methods change a person’s body by giving pregnancy and birth
Data of 300,000 births shows how biological measurements are replaced by carrying and transporting a child

During pregnancy, women’s bodies undergo huge physical changes that can last for more than a year after birth.
Catherine delahe/getty images
The biologist has created one of the most detailed paintings in the body of women before and after the changes occurring before and after. PregnancyBy pooling and studying about 44 million physical measurements from over 300,000 births.
Huge study1Which used unknown consequences of blood, urine and other tests made before one year of pregnancy, to take a child and child to the body – to take a child and child to the body – from the innumerable changes made to support a fetus for the effects of their sudden departure from the body during birth. Was published in research Science progress On 26 March.
The study suggests that the postpartum period in the body is longer than the people, which is said by Jennifer Hall, who researching reproductive health at University College London. She says that there is a social hope that you bounce back quickly after the child’s birth. “It is like biological proof you don’t.”
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Results also suggest that it may be possible to identify women in the risk of some common complications of pregnancy-including a situation Prior intervention And gestational diabetes – Before conception. Currently, these conditions are diagnosed during pregnancy.
Data power
Researchers used unknown data from medical records supplied by Israel’s largest health care provider, and spread over a period from 2003 to 2020. To create a specific pregnancy picture, he used the results of testing from only 20–35 years of age, who did not experience medication or chronic disease.

The team collected results from 76 general tests – including cholesterol, immune cells, red blood cells, inflammation and health remedies for liver, kidney and metabolism – 4.5 months before conception and 18.5 months after the child’s birth. This allowed them to install the average values for each test for each week in that period.
“To see that in every test it has a dynamic profile, which weeks -head -week, and have never been seen before, took my breath away to see it.”
Researchers found that, in the first month after birth, 47% of the 76 indicators stabilized their pre-malaise values. But it took more than 10 weeks to stabilize 41% indicators. These included many ways of liver function and cholesterol that took about six months to settle, and an indicator of bone and liver health, which took a year (see ‘the slow recovery of the child at a slow pace of the body’). It took 4–10 weeks to stabilize the remaining 12%.
Many measurements and blood-informed, including several indicators of blood and blood health, but did not return to the level of its pre-infrastructure even after 80 weeks, when the study ended. Scientists say that such long -lasting differences arise from themselves or behavior after pregnancy and birth, which is a question for future research.
Researchers classified indicators into four groups according to their trajectory. Some measures increased during pregnancy, then dropped the post-partem; Others did the opposite. Others still do not just drop or rhise to meet the level of pre-inflammation: they underline or underline their pre-growth values in delivery, before settling at their east-mining levels. This change can be explained to the body by ‘overcamping’.
Pre-concept change
Scientists found different changes in the body which started even before conception. Some of these – including a decrease in a marker of inflammation and an increase in folic acid were beneficial. Researchers credited people for the tendency to be more healthy while trying to take supplements and conceive.
Researchers also separated separate tests from women who have developed complications that are not currently diagnosed until pregnancy, including gestational diabetes and pre-eclampsia, a condition that results in high blood pressure and can be a threat to life. They found that these women had different profiles for some markers compared to tests of healthy pregnancies in these women, and in some cases, differences before conception were the most important.
This discovery is exciting, the hall says, as it increases the possibility of being able to identify and help women at the risk of these conditions before conceiving.
The conclusions show the power of unknown biomedical information to highlight fresh insight, Alon says. His team is now taking a similar approach to study Menopause“We can ask any statistical question,” they say. “It is like heaven.”
This article is reproduced with permission and was first published On March 26, 2025,