Author Topic: The Love-Rat Gene: Why Some Men Are Born To Cause Trouble And Strife  (Read 731 times)

Ginger

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It's a question women the world over have long pondered: Why are some men unable to commit?

Now science may finally have the answer  -  it's in their genes.

Researchers have found that men with a common genetic 'flaw' are less likely to marry even if they have children with a long-term partner.

Those who have tied the knot are twice as likely to be in a rocky marriage and to have discussed the possibility of divorce.

Perhaps unsurprisingly, partners of men with the 'love rat gene' were also found to be unhappy with their lot in life.

Scientists claim the gene  -  which is linked to the bonding chemical vasopressin  -  could explain the Casanova tendencies of men such as Rod Stewart, who has been married three times and fathered seven children by five different women, and Richard Burton, who racked up five marriages to four women  -  twice to Elizabeth Taylor.

Swedish researchers examined the DNA of 500 sets of twins, all of whom were in long-term relationships and had children.

Some were living with their partner, while others were married. The men and women were asked a series of questions about their relationship, and the answers were then compared to their genetic make-up.

The scientists found the 'love rat' effect applied only to men with two copies of the rogue '334' form of the AVPR1A gene. These men said they found it harder to bond with their wife or girlfriend.

They were also less likely to be married, despite being in a long-term relationship and having at least one child.

It is thought the gene, which was carried by 40 per cent of the men, may affect the way the brain uses vasopressin.

Writing in the journal Proceedings of the National Academy of Sciences, the researchers, from Stockholm's Karolinska Institute, said: 'This may tentatively reflect a lower degree of commitment.'

They plan to carry out a similar study to see if the 'cuddle hormone' oxytocin also affects women's ability to commit.

Animal studies have shown that vasopressin affects moles' ability to remain monogamous.

The chemical, which is made by the pituitary gland, has also been linked to autism in previous studies.

However, women worried that their man has the 'love rat gene' need not necessarily start thinking of ways to get out of the relationship.

Researcher Hasse Walum said: 'This gene is only a small part of the process  -  there are many different ingredients to a happy marriage.'

The roar of approval

A woman's head may be turned by a flash car, but it is the sound that really drives them wild, research has found.

Even those who claimed to have no interest in motoring saw their levels of testosterone - which is an indicator of sex drive - soar after listening to the engines of four different models.

A Maserati was the most popular model, affecting all of the 20 women taking part, compared to just 50 per cent of men.

However, the women saw a decrease in their hormone levels after listening to a Volkswagen Polo.

For men, a Lamborghini was the favourite, with a Ferrari coming in second.

Steve Langan, of insurers Hiscox, who conducted the study, said: 'Luxury cars do quite literally turn heads.'

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