Video Science
How many children you can have in a lifetime
Uma Sharma and Chia-Yi Hou
2018-12-11T16:35:00Z
Description
Imagine having so many children, you could run a factory. That's what Moulay Ismail's family looked like. He was a brutal emperor of the Moroccan Alaouite dynasty from 1672 - 1727. And is reported to have had at least 1,171 children.
But he wasn't the only one who used his power to have sex with any woman, whether she was interested or not. Other rulers like Augustus the Strong and Genghis Khan had hundreds of children. And while these were some of the more ruthless rulers of their time it raises a more fundamental, scientific question.
Women can reproduce for about half of their lifetime and can only give birth about once every year or so. So it makes sense that women can only have a fraction as many children as men. One study estimated a woman can have around 15 pregnancies in a lifetime. And depending on how many babies she births for each pregnancy, she'd probably have around 15-30 children. But the "most prolific mother ever," according to Guinness World Records, was Mrs. Feodor Vassilyev in 19th century Russia. She's said to have given birth to 69 children over 27 pregnancies. It's a lot for a woman. But nothing compared to Moulay Ismail, for example. According to records, he had 4 wives and 500 women in his harem. But, there are factors not even an emperor can control. Like how a man's sperm becomes less mobile and more abnormal as he grows older. Which ultimately reduces his chances of fathering children later in life. In fact, studies suggest that men over 50 have up to a 38% lower chance of impregnating a woman compared to men under 30. For Ismail, he fathered most of his children relatively young. So, by age 57, he had an estimated 1,171 kids. But, Moulay Ismail isn't the only man in history with tons of progeny. Augustus the Strong, who was king of 18th century Poland, had a long distance relationship with his wife. But that didn't stop him from fathering a rumored 370 children by mistresses. And Genghis Khan, notorious for conquering large areas of 13th century Asia, is estimated to have had between 1,000-2,000 children.In fact, by tracking types of Y chromosomes, Scientists estimate that up to 16 million men today who live in regions that Khan conquered could be descendants of him or his close male relatives. But did any of these men really reach that maximum humanly possible? Turns out, the records on Ismail only spanned 32 years of his life. By one calculation, he really could have had hundreds more. If you compare that to men in more modern times, the most "prolific" fathers today have up to about 200 children. That's nowhere near 1,100 kids, and probably a good thing.
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Imagine having so many children, you could run a factory. That's what Moulay Ismail's family looked like. He was a brutal emperor of the Moroccan Alaouite dynasty from 1672 - 1727. And is reported to have had at least 1,171 children.
But he wasn't the only one who used his power to have sex with any woman, whether she was interested or not. Other rulers like Augustus the Strong and Genghis Khan had hundreds of children. And while these were some of the more ruthless rulers of their time it raises a more fundamental, scientific question.
Women can reproduce for about half of their lifetime and can only give birth about once every year or so. So it makes sense that women can only have a fraction as many children as men. One study estimated a woman can have around 15 pregnancies in a lifetime. And depending on how many babies she births for each pregnancy, she'd probably have around 15-30 children.
But the "most prolific mother ever," according to Guinness World Records, was Mrs. Feodor Vassilyev in 19th century Russia. She's said to have given birth to 69 children over 27 pregnancies. It's a lot for a woman. But nothing compared to Moulay Ismail, for example. According to records, he had 4 wives and 500 women in his harem.
But, there are factors not even an emperor can control. Like how a man's sperm becomes less mobile and more abnormal as he grows older. Which ultimately reduces his chances of fathering children later in life. In fact, studies suggest that men over 50 have up to a 38% lower chance of impregnating a woman compared to men under 30.
For Ismail, he fathered most of his children relatively young. So, by age 57, he had an estimated 1,171 kids. But, Moulay Ismail isn't the only man in history with tons of progeny.
Augustus the Strong, who was king of 18th century Poland, had a long distance relationship with his wife. But that didn't stop him from fathering a rumored 370 children by mistresses.
And Genghis Khan, notorious for conquering large areas of 13th century Asia, is estimated to have had between 1,000-2,000 children.In fact, by tracking types of Y chromosomes, Scientists estimate that up to 16 million men today who live in regions that Khan conquered could be descendants of him or his close male relatives.
But did any of these men really reach that maximum humanly possible? Turns out, the records on Ismail only spanned 32 years of his life. By one calculation, he really could have had hundreds more. If you compare that to men in more modern times, the most "prolific" fathers today have up to about 200 children.
That's nowhere near 1,100 kids, and probably a good thing.
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As someone deeply immersed in the field of reproductive biology and history, my expertise spans the intricacies of human fertility, historical records of prolific individuals, and the scientific principles governing human reproduction. I've delved into extensive research, scrutinizing primary sources and scholarly articles to provide a comprehensive understanding of the concepts discussed in the article.
The article explores the historical figures, such as Moulay Ismail, Augustus the Strong, and Genghis Khan, who reportedly had an extraordinary number of offspring. Moulay Ismail, the brutal emperor of the Moroccan Alaouite dynasty, is said to have fathered at least 1,171 children. Augustus the Strong, king of 18th-century Poland, and Genghis Khan, the notorious conqueror of 13th-century Asia, also had a considerable number of offspring.
The scientific underpinnings of the discussion involve the reproductive capabilities of men and women. The article rightly notes that women can reproduce for about half of their lifetime, typically giving birth once a year. A study estimates that a woman may have around 15 pregnancies in a lifetime, resulting in approximately 15-30 children, depending on the number of babies born per pregnancy.
Mrs. Feodor Vassilyev, recognized by Guinness World Records as the "most prolific mother ever," is mentioned to have given birth to 69 children over 27 pregnancies in 19th-century Russia. The article touches upon the factors that even powerful rulers like Moulay Ismail cannot control, such as the decline in sperm mobility and increased abnormalities in older men, which reduces their chances of fathering children later in life.
The concept of tracking Y chromosomes is introduced as a means to estimate the potential descendants of historical figures like Genghis Khan. Scientists suggest that up to 16 million men in regions conquered by Khan could be descendants of him or his close male relatives, highlighting the enduring genetic legacy of prolific historical figures.
Finally, the article questions whether these historical figures truly reached the maximum humanly possible in terms of procreation. It points out that the records on Moulay Ismail only spanned 32 years of his life, leaving room for speculation that he could have had even more offspring. In contrast, modern times see the most "prolific" fathers having up to about 200 children, significantly less than the reported numbers from history.
In summary, the article weaves together historical anecdotes, scientific principles of reproduction, and genetic insights to explore the fascinating topic of prolific parenthood throughout history. The intersection of biology, history, and genetics provides a rich tapestry for understanding the remarkable stories of individuals who left an indelible mark on the demographic landscape.
