Why do women live longer than men?

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Why Women Live Longer Than Men

It's no secret that Women usually live longer than men. The question is how do they do it? Well now, Stanford University scientists may have some answers, EyeOpener explains.

They put out a study published in Cell Stem Cell, showing that estrogen has increased blood stem cells in female mice, and even helped them regenerate brain stem cells faster than male mice. Plus, male mice lived longer when they were given estrogen supplements.

So estrogen could have something to do with longevity. But something else might be a major factor that give ladies the advantage.

Thomas Perls from Boston University School of Medicine notes that women are more prone to have an iron deficiency because of their periods.

Dr Perls says that iron helps produce oxygen free radicals. Oxygen free radicals, while awesome at fighting infections, also contribute to aging by damaging cell membranes. So if you got less iron, there's less free radicals, and your cells all over your body might age slower.

Not to mention all the lifestyle reasons. Dr. Marianne Legato from Columbia University sites that women are less likely to be daredevils, usually take better care of their heath, and have stronger social networks.

When you look at the oldest people in the world, the top 10 are all ladies, and no dude has made it to 117 yet.

The CDC even says that a girl born in 2012 can expect to live to about 81 years old, and a boy, born the same year, is looking at around 76 years on the planet.

Speaking of long lives, did you know these British sisters are the world's oldest siblings? Combined, they have lived a whopping 391 years!

Take a look at some of the oldest people ever:

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World's oldest people
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Why do women live longer than men?
In this photo supplied by the Guinness World Records, Marco Frigatti, Head of Records for Guinness World Records, left, presents Israel Kristal a certificate for being the oldest living man, in Haifa, Israel, Friday, March 11, 2016. Guinness said in a statement that Kristal is 112 years and 178 days old as of March 11. Guinness said Kristal was born in 1903 to an Orthodox Jewish family near the town of Zarnow in Poland. However, Susannah Mushatt Jones, an American who is 115, is both the oldest living person and the oldest living woman. (Dvir Rosen/Guinness World Records via AP)
TO GO WITH AFP STORY Centenary twins, Paulette Olivier (L) and Simone Thiot (R) pose with an old picture of their 20 years inside their room at the retirement home 'Les Bois Blancs' on February 11, 2016. The twins, birth name Lamolie, were born on January 30, 1912 at 11 o'clock at the address Impasse 'du coteau' in Limeray, a few kilometres from Amboise. The two sisters aged 104 years are believed to be the two oldest twins in the world. / AFP / GUILLAUME SOUVANT (Photo credit should read GUILLAUME SOUVANT/AFP/Getty Images)
TO GO WITH AFP STORY Centenary twins, Paulette Olivier (R) and Simone Thiot (L) walk in the corridors at the retirement home 'Les Bois Blancs' on February 11, 2016. The twins, birth name Lamolie, were born on January 30, 1912 at 11 o'clock at the address Impasse 'du coteau' in Limeray, a few kilometres from Amboise. The two sisters aged 104 years are believed to be the two oldest twins in the world. / AFP / GUILLAUME SOUVANT (Photo credit should read GUILLAUME SOUVANT/AFP/Getty Images)
Worlds oldest person Jeralean Talley attends the 17th Annual Ford Freedom Awards at Max Fischer Music Center on May 5, 2015 in Detroit, Michigan. (Photo by Monica Morgan/WireImage via Getty)
Japan's Misao Okawa, 116, who is recognized as the world's oldest living person by Guinness World Records is celebrated by Ward Mayor Takehiro Ogura at a nursing home in Osaka, western Japan Wednesday, March 4, 2015 ahead of her birthday. Okawa will turn 117 on Thursday, March 5. (AP Photo/Kyodo News)
Misao Okawa, 115, who is recognized as the world's oldest living woman by Guinness World Records poses on the Doll Festival in Osaka, western Japan Monday, March 3, 2014. (AP Photo/Kyodo News)
Misao Okawa, the world's oldest Japanese woman, poses for a photo on her 117th birthday celebration at Kurenai Nursing Home on March 4, 2015 in Osaka, Japan. Japanese woman Misao Okawa is oldest living person in the world as certified by the Guinness World Records, who celebrates her 117 birthday on March 5. Okawa has been dubbed the worlds oldest living person since the June 12, 2013 death of 116 years and 54 days old Jiroemon Kimura, also Japanese. She is ranked first Oldest Japanese person ever and third person reached to 117in the world. (Photo by Buddhika Weerasinghe/Getty Images)
Misao Okawa, the world's oldest Japanese woman looks on before her 116th birthday celebrations at Kurenai Nursing Home on March 5, 2014 in Osaka, Japan. Okawa, born in Tenma, Osaka, on March 5, 1898 to a family of Kimono merchants, married in 1919 and had three children, of which a daughter and a son are still alive, and has four grandchildren and six great-grandchildren. (Photo by Buddhika Weerasinghe/Getty Images)
In this Thursday, July 3, 2014, file photo, Gertrude Weaver poses at Silver Oaks Health and Rehabilitation Center in Camden, Ark., a day before her 116th birthday. With the death of a 117-year-old woman in Japan, Weaver became the world's oldest person, according to the Los Angeles-based Gerontology Research Group, which tracks supercentenarians. (AP Photo/Danny Johnston, File)
In this photo taken Thursday, July 3, 2014, Gertrude Weaver, who turns 116 July 4, raises her arms as she calls the hogs at Silver Oaks Health and Rehabilitation Center in Camden, Ark. The Gerontology Research Group says Weaver is the oldest person in the United States and second-oldest person in the world. (AP Photo/Danny Johnston)
Gertrude Weaver, right, talks with her son Joe Weaver, Thursday, July 3, 2014 at Silver Oaks Health and Rehabilitation Center in Camden, Ark., a day before her 116th birthday. The Gerontology Research Group says Weaver is the oldest person in the United States and second-oldest person in the world. (AP Photo/Danny Johnston)
Family Portrait Of Sarah Knauss (Seated Left) The World's Oldest Women June 15, 1999. (Photo By Theo Westenberger/Getty Images)
Maria Esther de Capovilla talks with reporters at her house in Guayaquil, Ecuador, Wednesday, Dec. 14, 2005. At 100 years old, she became bedridden and so weakened from a stomach ailment that a priest administered last rites. But Maria Esther Capovilla recovered and 16 years later she has become the oldest living person on Earth, according to Guinness World Records. (AP Photo/Victor Proanio)
Maria Esther de Capovilla holds a portrait of her husband, an Austrian marine at her house in Guayaquil, Ecuador, Wednesday, Dec. 14, 2005. At 100 years old, she became bedridden and so weakened from a stomach ailment that a priest administered last rites. But Maria Esther Capovilla recovered and 16 years later she has become the oldest living person on Earth, according to Guinness World Records. (AP Photo/Victor Proanio)
Besse Cooper, 114, right, receives a kiss from her grandson Paul Cooper, 42, during a ceremony in which Guinness World Records recognizes her as the word's oldest living person, at the nursing home where she lives, Thursday, March 10, 2011, in Monroe, Ga. (AP Photo/John Amis)
Besse Cooper, who at 114 years and five months old, sits in her room at a nursing home Tuesday, Feb. 1, 2011, in Monroe, Ga. Cooper is now the world's oldest person, according to the Los Angeles-based Gerontology Research Group. (AP Photo/David Goldman)
Besse Cooper, right, 114 years and five months old, talks with her son Sid Cooper in her room at a nursing home Tuesday, Feb. 1, 2011 in Monroe, Ga. Cooper is now the world's oldest person, according to the Los Angeles-based Gerontology Research Group. (AP Photo/David Goldman)
Christian Mortensen enjoys a birthday cigar during his 115 birthday celebration at The Aldersly Garden Retirement Community where he resides 15 August. Mortensen, the world's oldest man, attributes his longevity to drinking lots of water, living life with a positive attitude, and smoking a weekly cigar. (Photo by Monica M. Davey/AFP/Getty Images)
Christian Mortensen, 114 years-old, takes a puff from his cigar at his home in the Aldersly Retirement Community in San Rafael, California Mortensen is the oldest man alive as he will celebrate his 115 birthday on August 16th. (Photo by John G. Mabanglo/AFP/Getty Images)
Emiliano Mercado Del Toro, 113, speaks to the media at his home in Isabela, Puerto Rico, Thursday, Jan. 20, 2005. Mercado, born in August 21, 1891 and certified the oldest man in the world by the Guinness Book of World Records is also the oldest living veteran. He didn't see action because, called up in 1918, he was two months into U.S. Army training when World War I ended Nov. 11, 1918. He was married three times but never had children. (AP Photo/Javier Gonzalez)
Emma Faust Tillman rests as her daughter, Marjorie Tillman helps prop her head back, at the Riverside Health and Rehabilitation in East Hartford, Conn., Wednesday, Jan. 24, 2007. Tillman, 114 years old, has become the world's oldest person after Emiliano Mercado del Toro, died Wednesday, Jan. 24, 2007, at his home on the northern coast of Puerto Rico. He was 115. (AP Photo/Jessica Hill)
114 year old Walter Breuning sits for an interview with a reporter for the Associated Press in the lobby of his senior residence in Great Falls, Mont, on Oct. 6, 2010. Officials at a Montana retirement home say the world's oldest man has died. Walter Breuning was 114, making him the oldest man and the second-oldest person in the world. Breuning was born on Sept. 21, 1896, in Melrose, Minn., and moved to Montana in 1918. Breuning lived at the Rainbow Senior Living retirement home in Great Falls. Retirement home spokeswoman Stacia Kirby confirmed that Breuning died Thursday, April 14, 2011 of natural causes in a Great Falls hospital. (AP Photo/Mike Albans)
Walter Breuning, the 'World's Oldest Man,' receives one of the Freemasons' highest honors, a George Washington Gavel, at his 113th birthday party on September 21, 2009 at the Rainbow retirement home in Great Falls, Montana. Breuning, born Sept. 21, 1896 in Melrose Minnesota, inherited the title of 'World's Oldest Man' when Henry Allingham of England died last July 18. Breuning moved to Great Falls in 1918 with the expansion of the railroad and worked in the railroad business for 50 years. He says he stays healthy by eating just two meals per day and exercises by strolling the halls of the retirement home with the aid of a walker. His earliest memory is of hearing his grandfather talk about fighting as a Union soldier in the Civil War. (Photo by John Moore/Getty Images)
Walter Breuning, at age 112 now considered the oldest man in the world, smiles while at the Rainbow Assisted Living Facility on July 23, 2009 in Great Falls, Montana. Bruening, born Sept. 21, 1896 in Melrose Minnesota, inherited the title when Henry Allingham of England died last weekend. Breuning moved to Great Falls in 1918 with the expansion of the railroad and worked for the railroad for 50 years. He says he stays healthy by eating just two meals per day and excercises by strolling the halls of the retirement home with the aid of a walker. He shuns medicine, except for one low-dose aspirin per day. His earliest memory is of hearing his grandfather talk about fighting as a Union soldier in the Civil War. The Guinness World Records is expected to make the official announcement soon, after verifying his records. (Photo by John Moore/Getty Images)
Yukichi Chuganji, certified by Guinness World Records as world's oldest man, celebrates his 113th birthday in Ogiri, Fukuoka Prefecture 23 March 2002. Chuganji was born in 1889 and made living breeding silkworm and working for a bank. (Photo via Jiji Press/AFP/Getty Images)
Spanish Joan Riudavets Moll, born 15 December 1889 in Es Mitjorn Gran, Menorca, poses for photographers during his birthday party. Riudavets, a former shoemaker, sleeps up to 14 hours a day, only suffers pain in his legs but can walk. He watches TV, reads newspapers and gives a lot of importance to food, especially yoghurts. (Photo by Oscar Pipkin/AFP/Getty Images)
Spanish Joan Riudavets Moll, born 15 December 1889 in Es Mitjorn Gran, Menorca, blows candles next to Rosa Estaras the Vice-President of the Balearic Government during his birthday party. Riudavets, a former shoemaker, sleeps up to 14 hours a day, only suffers pain in his legs but can walk. He watches TV, reads newspapers and gives a lot of importance to food, especially yoghurts. (Photo by Oscar Pipkin/AFP/Getty Images)
Japan's oldest person Yoneko Minagawa, 113, smiles as she receives a flower bouquet at a nursing home in the town of Fukuchi in Fukuoka prefecture, on Japan's southern island of Kyushu 15 September 2006, ahead of the Japanese holiday 18 September, 'Respect for the Aged Day'. Yoneko Minagawa was born 04 January 1893, becoming Japan's oldest person when Ura Koyama died last year. Meanwhile Japan's oldest man, Tomoji Tanabe of Miyazaki prefecture, also on Kyushu island, turned 111 years old 18 September to coincide with the national holiday. (Photo via Jiji Press/AFP/Getty Images)
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