The ‘Macho’ Gene That Makes Men Behave Aggressively Has Been Found

The ‘Macho’ Gene That Makes Men Behave Aggressively Has Been Found
World
Like Us On Facebook
Like Us On Facebook

Scientists believe they have found the ‘macho’ gene which makes men behave more aggressively than women under stress. They say this one gene could explain why men have a ‘fight or flight’ response while women are more likely to try and defuse the situation, a response known as ‘tend and befriend’.

Australian researchers have studied the chemicals secreted by men when they react to stress – and how this influences their behavior.

And they propose that the SRY gene – only found on the Y chromosome – and the proteins it activates in the body, are the key.

This gene was previously thought just to be involved in the development of male characteristics in the womb.

But Dr Joohyung Lee and Professor Vincent Harley from Prince Henry’s Institute in Melbourne have shown these proteins are actually present in the brain and other organs of adult males.

They have shown these may regulate stress hormones and blood pressure which cause stressed-out men to experience their pulse quickening and adrenaline coursing through their veins – triggering aggression.

In women, psychologists believe this behaviour is countered by the release of oestrogen and the ‘cuddle hormone’ oxytocin.

Dr Lee said: ‘The aggressive fight-or-flight reaction is more dominant in men, while women predominantly adopt a less aggressive tend-and-befriend response.

‘New evidence indicates that the SRY gene exerts “maleness” by acting directly on the brain and peripheral tissues to regulate movement and blood pressure in males.

‘In view of this, we propose SRY provides a genetic basis to explain why the “fight flight” response Is manifested mainly in males rather than females.’

Although research into this has mainly been carried out in men – with no direct comparison to stress in women – they believe it could helps psychologists and lead to new treatments for personality disorders.

It could also explain why some conditions – such as Attention Deficit Hyperactivity Disorder, autism and Parkinson’s disease – affect more men than women.

Studies in rats and humans found SRY proteins in the brain, heart, lungs, liver, kidneys and testes. They believe it regulates production of catecholamines – stress hormones including adrenaline.

These cause ‘fight or flight’ – the physical reaction to a threat, experienced by all animals – in which hormones cause symptoms such a quickening-pulse, slow digestion, dilated pupils and shaking.

Females have been shown to have a different response – protecting their young or trying to reduce tension by seeking the support of others.

Co-author Professor Harley said: ‘People long thought that SRY’s only function was to form the testes. Then we found SRY protein in the human brain and with UCLA researchers led by Professor Eric Vilain, showed that the protein controls movement in males via dopamine.’

‘This suggests SRY exerts male-specific effects in tissues outside the testis, such as regulating cardiovascular function and neural activity, both of which play a vital role in our response to stress.’

The study is published tomorrow in the journal BioEssays.

Elite.

Share Tweet
React
Like Us On Facebook
Like Us On Facebook

Preston Waters

Preston Waters is a thinker. He's not your traditional philosophical persona, however, as he leaves no topic untouched. Covering all the bases, from business to women, Preston Waters is the ultimate man's man for Gen-Y.

More In World

World Sean Levinson

White Woman Sues Sperm Bank After Having A Black Baby

A Chicago-area sperm bank is being sued by a white Ohio woman after it mistakenly sent her vials of sperm from an African American man. Jennifer Cramblett, who ordered sperm from a white man for her and her partner, only learned that her daughter, Payton, would be half-black after becoming pregnant in April of 2012. […]

World Emily Arata

Girl Miraculously Found In Mexico After Missing For 12 Years

Sabrina Allen went missing 12 years ago and has finally been returned to the custody of her father, Greg. Allen, who disappeared from her Austin, Texas, home at just 4 years old, was kidnapped by her mother, Dara Llorens. As per the terms of Llorens’ custody agreement, she took the little girl for a weekend visit. […]

World Sean Levinson

Ebola Patient In The US May Have Exposed Dozens To The Disease

The man identified as the first person to be diagnosed with Ebola in the US came into contact with over a dozen people, some of whom were children, before being diagnosed and quarantined. According to Dallas news station WFAA, five children ranging from elementary to high school students may have been exposed to the virus and […]

World Sean Levinson

Jail Had Absolutely No Clue Prisoner Escaped Until Lawyer Tried To Visit

A Washington state inmate is back in jail after his disappearance went completely unnoticed for two days. According to the Everett Herald, 19-year-old Rhyan Vasquez simply walked out of an unguarded door in Marysville City Jail on September 22 after attending Bible study at a visitation area. Surveillance video shows Vasquez walking into a hallway, […]

Also On Elite

World

Former ISIS Member Says Girls As Young As 9 Years Old Are Forced Into Marriage

A former member of the Islamic State (ISIS) has revealed that members of the group force girls as young as 9 years old to become their wives. The communications technician told Your Middle East that because Muhammad, the prophet of Islam, married his wife when she was just 9 years old, the militants consider anyone […]

Life

It’s Killing Society: 5 Reasons Why Being Politically Correct Is Ruining Us

Most people today have opinions and statements to make. As individuals, we like to put in our two cents and show others how smart we are. However, when it comes to social pressure and appeasing people around us, we tend to turn down motivation and hold back when faced with possible alienation and criticism. How […]

Gentlemen

You’re In Luck, Guys: Women Prefer Men With Beer Bellies To Those With Abs

Guys, listen up. Apparently, females like you better when there’s more of you to love. So, grab another beer and celebrate that gut you’ve been working on since high school. According to a recent study commissioned to mark the DVD release of “Bad Neighbors,” starring Zac Efron and Seth Rogen, three in four British women […]