A mothers of boys are more prone to postnatal depression than those who give birth to girls, a study has found.
In the post-natal depression (PND) found the odds of developing this condition increased by 71 to 79 per cent in the mothers of male babies.
And women whose births had complications were 174 per cent more likely to experience PND compared with those women who had no complications.
Dr. Sarah Johns and Dr. Sarah Myers in the University's School of Anthropology and Conservation
It have been reduced at increased risk of PND, they had reduced odds of developing.
Support for two of their known mental health concerns.
It means greater support can prevent PND from developing.
Watch below: Everything you need to know about postnatal depression
Dr Johns said: "PND is a condition that can be avoided.
"The finding of a child with a child is difficult to improve."
What is postnatal depression?
The NHS says PND is a type of depression that can start at any point in the first year.
Many women feel a bit down, tearful or anxious in the first week after giving birth.
This is often called the 'baby blues' and is so common that it's considered normal. But this does not come for more than two weeks after giving birth.
Postnatal depression, you could have postnatal depression.
The main symptoms include:
a persistent feeling of sadness and low mood
loss of interest in the world around you and no longer enjoying things that you used to give you pleasure
feeling of energy and feeling tired all the time
trouble sleeping at night and feeling sleepy during the day
feeling that you're unable to look after your baby
problems concentrating and making decisions
loss of appetite or increased appetite (comfort eating)
feeling agitated, irritable or very apathetic (you "can not be bothered")
feelings of guilt, hopelessness and self-blame
difficulty bonding with your baby with a feeling of indifference and no sense of enjoyment in his or her company
frightening thoughts – for example, about hurting your baby; these can be scary, but they're very rarely acted upon
thinking about suicide and self-harm
The NHS says that if you can be depressed, talk to your GP or health visitor as soon as possible.
Do not struggle on alone and hope the problem will go away. It can continue for months or years if not addressed.
Fathers and partners can also become depressed after the birth of a baby. You should seek help if this is affecting you.
For more on treatment of postnatal depression, click here
So why is the birth of baby boys linked to postnatal depression?
Dr. Johns and Dr. Myers say there is a link between inflammatory immune response and the development of depressive symptoms.
And the gestation of male fetuses and the experience of birth complications are associated with increased inflammation.
Depression is increasingly accepted as a "neuroprogressive and inflammatory process", reports ScienceDirect.
It is thought that immune inflammatory responses are at the root of depression, which is supported by the most antidepressant anti-inflammatory effects.
So inflammation is thought to be BEFORE the emotional distress of depression, rather than be caused by it.
There is a suggestion that is an evolutionary adaptation to help prevent and fight infection.