Valentina Vassilyeva and her husband Feodor Vassilyev are alleged to hold the record for the most children a couple has produced.
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Meijer, a sperm donor, is believed to have fathered 550 children, but The Times reported that he is being sued for increasing the risk of accidental incest. Meijer is reportedly from The Hague and now lives in Kenya.
Most prolific mother ever
The record for number of children born to one mother is 69 in the 1700s, according to Guinness. She was the wife to Feodor Vassilyev, a peasant from Shuya, Russia. She gave birth to 16 pairs of twins, seven sets of triplets and four sets of quadruplets.
Most normal men could manage to fertilize two women per day (using the normal method) over a period of 40 years, if they lived that long - that could lead to ~28,000 children.
Mariam Nabatanzi Babirye (born December 25, 1980) also known as Maama Uganda or Mother Uganda is the most fertile woman in the world. She has given birth to a total number of 44 children, 38 of whom are alive. As of April 2023, her eldest children are 28 years and the youngest are 6 years old.
Anthea gave birth to her son, Nicholas Jay, on June 15, 2011. English actress Tina Malone gave birth to a baby girl in December 2013 at the age of 50, after IVF treatment. American singer Sophie B. Hawkins gave birth to a baby girl named Esther Ballantine Hawkins on July 7, 2015, at the age of 50, after IVF treatment.
The most fertile woman in history is alleged to be an 18th-century Russian peasant called Valentina Vassilyev. Between 1725 and 1765, she is recorded as giving birth to a total of 69 children – 67 of whom survived infancy. This included 16 pairs of twins, seven sets of triplets, and four sets of quadruplets.
Jennifer Waters gave birth to five sets of twins within eight years. She became a surrogate mom to three of the five pairs of children. The mom was thrilled that the five pregnancies resulted in 10 healthy twins.
Since men require less time and fewer resources to have kids, the most "prolific" fathers today can have up to about 200 children. The number of children men can have depends on the health of their sperm and other factors like how many women they can reproduce with.
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.
The longest recorded human pregnancy was 375 days, or just over 12 and a half months, according to Guinness World Records. During this pregnancy, a woman named Beulah Hunter gave birth to a healthy baby girl in 1945.
The longest interval between the birth of twins is 90 days, in the case of Molly and Benjamin West, dizygotic (fraternal) twins born in Baltimore, Maryland, USA to parents Lesa and David West (all USA) on 1 January and 30 March 1996.
The oldest mother that was reported by Guinness World Records to deliver a child after conceiving naturally was 59. In 2019, a 74-year-old woman from southern India had twin girls via IVF and is reportedly the oldest woman ever to give birth, according to USA Today.
Known as the Sperminator the inseminator, or perhaps even "America's Dad," Ari Nagel is the biological father to over 100 children across the world.
Donald Cline, a former fertility doctor who used his own sperm in donations, which resulted in his fathering at least 50 children throughout the 1970s and '80s. It sounds almost too twisted to be real, but unfortunately, Our Father is an investigative documentary, and Dr. Donald Cline is a real man.
Am I too old? While certain risks may rise with age, men continue to produce sperm throughout their lives and can father healthy children into old age.
The age where a man is most fertile is between 22 and 25 years. It is suggested to have children before the age of 35. After this age, the male fertility begins to worsen. After 35, the sperm might result in pregnancies where mutations can occur.
There's no expiration date on when guys can father a child. Case in point: Rocker Mick Jagger just had his eighth child at the age of 73. Since men don't hit menopause—the time in a woman's life where her fertility ends—they can typically continue to father children into their later years.
Monoamniotic-monochorionic Twins
This is the rarest type of twin, and it means a riskier pregnancy as the babies can get tangled in their own umbilical cords. If you have monoamniotic-monochorionic twins, your healthcare provider will monitor your pregnancy closely.
Identical, or monozygotic (MZ), twins have 100 percent of their genes—including those that influence risk for alcoholism—in common, whereas fraternal, or dizygotic (DZ), twins share (on average) only 50 percent of the genes that vary in the population (see figure). Common Environmental Sources.
The DNA of monozygotic twins tends not to be 100% identical, and epigenetic and environmental differences further widen the gap between twin pairs. It's not nature or nurture; it's a complex interaction between our genes, our environment, and our epigenetic markers that shape who we are and what illnesses befall us.
Trisomy 13 (also known as Patau syndrome) - MN Dept. of Health.
Erramatti Mangayamma at age 74 gave birth to twins in India last week after becoming pregnant through IVF, making her the oldest person ever to give birth, according to her doctors, and reigniting debate over so-called geriatric pregnancies.