Piers Morgan ranted at 'radical feminism' on Good Morning Britain after experts suggested males must be encouraged away from attributes often associated with males, such as stoicism and dominance.

The GMB rant was sparked by the American Psychological Association (APA) which issued its first ever guidelines for mental health professionals working with men and boys.

According to research, attributes such as courage, self-reliance, competitiveness and stoicism are 'psychologically harmful' when applied to men and boys because of the pressure to live up to them.

Piers Morgan said: ‘Andy Murray perfectly personifies traditional masculinity. Here’s why. Throughout his career he’s been stoic, competitive, dominant and aggressive.

‘All those four things have now been identified by the America Psychological Association as harmful.

‘Every single characteristic that Andy Murray has shown to become the greatest tennis player we’ve ever had in this country, arguably our greatest ever sportsman. Everything that drove him to be this successful l is harmful and must be stopped. Instead take your boys to a little corner and teach them how to cry all day.

‘What a load of flannel.’

Piers Morgan said he has 'three sons' and would 'like to think they’re stoic, dominant and aggressive' when playing sports and competing.

He added: 'The whole agenda is driven by radical feminists who want to expunge masculinity and people being male.

'It’s nonsense.

'They’re good thing. Don’t let these people tell you, you can’t be strong

'Being stoic is wrong?

'How would Churchill have survived?

'How would he have won the war

'Tell me that radicals? These are great characteristics. They are male.'

Susanna Reid interrupted: 'Winston Churchill was in touch with his emotions.'

Piers Morgan said Winston Churchill's stoicism was what made him a remarkable war time politician as he argued for men to be encouraged to be stoic and competitive

She also said dominance, aggression and competitiveness are not 'male attributes' and that females can often display the behaviours.

She added: 'If you think that’s all it is to be a man then it can be harmful

While men are at the top of huge companies, researchers for the APA said this can be harmful to them.

They recommended teachers, counsellors, coaches and community leaders should root out such behaviours and discourage boys from feeling they need to take on such attributes.

Susanna Reid argued women can also show the same attributes while Piers said feminists are trying to get rid of 'male attributes'

'Everybody has beliefs about how men should behave,' Ronald Levant, former APA president who has worked on the guidelines told the Washington Post.

'We found incredible evidence that the extent to which men strongly endorse those beliefs, it's strongly associated with negative outcomes.' The more men cling to rigid views of masculinity, the more likely they are to be depressed, or disdainful, or lonely.

The powerful APA has 117,500 members and its advice will be far reaching.

Former director of the New Schools Network, Toby Young wrote the advice 'will affect the lives of millions of men and boys for years to come'.