Women who give birth in winter are more at risk of postnatal depression, a study found.
Those who enter their final trimester during 'shortening' daylight hours are 29 per cent more likely to suffer from the mental-health condition.
In the northern hemisphere, this runs from August 5 to November 4 when there is 12 hours of daylight, according to the researchers. The third trimester begins at 28 weeks.
Sunlight is thought to trigger the production of the hormone serotonin, which boosts a person's mood and helps them feel calm.


Women who conceive early in the year are more at risk of postnatal depression (stock)
The researchers at San José State University analysed two studies with a total of 293 women.
These trials investigated the amount of daylight the women were exposed to during the last trimester of their pregnancies.
All of the participants were first-time mothers from California.
They also completed a questionnaire that assessed how often they experienced depression symptoms within the first three months of parenthood.
Results, published in the Journal of Behavioral Medicine, suggest pregnant women have a 30 per cent risk of developing postnatal depression overall.
This risk falls to just 26 per cent among those who are in their third trimesters during the 'long' daylight hours.
Women who are in their final stage of pregnancy between August and early November - 'short' days - are the most at risk, with a 35 percent chance of suffering from postnatal depression.
These women's symptoms are also more severe if the condition does develop.
'Among first-time mothers, the length of day in the third trimester, specifically day lengths that are shortening compared to day lengths that are short, long or lengthening, were associated with concurrent depressive symptom severity,' lead author Dr Deepika Goyal said.
The researchers recommend women with a history of depression who are in the final stage of their pregnancies during the short daylight months use light boxes.
This involves sitting in front of a light-emitting box for around half-an-hour at the start of each day.
Although evidence of their effectiveness is mixed, light therapy is thought to stimulate the sun's rays that are missing during the winter months.
Pregnant women may also benefit from being outside as much as possible.
'Women should be encouraged to get frequent exposure to daylight throughout their pregnancies to enhance their vitamin D levels and to suppress the hormone melatonin,' Dr Goyal said.
Melatonin is a hormone that regulates sleep, however, too much has been linked to insomnia and high blood pressure.
'Daily walks during daylight hours may be more effective in improving mood than walking inside a shopping mall or using a treadmill in a gym,' she added.
'Likewise, early morning or late evening walks may be relaxing but would be less effective in increasing vitamin D exposure or suppressing melatonin.'
The study also found insomnia, stress and a poor relationship with their partner also increases a woman's risk of postnatal depression.
A mother's age and income has no effect.
Postnatal depression affects more than one in 10 women within a year of giving birth in the US and UK.
Many experience the 'baby blues'; when they feel down, teary and anxious within the first two weeks of giving birth.
But postnatal depression occurs when a woman feels persistently sad, tired and withdrawn, as well as struggling to bond with her baby.
As many men may struggle with the condition as women, research suggests.
This comes after a study released earlier this year suggested singing helps women overcome postnatal depression.
New mothers who struggle with moderate-to-severe symptoms of the condition recover faster if they sing in a group, according to research by the Centre for Performance Science in London.
Link hienalouca.comhttps://hienalouca.com/2018/09/27/women-who-conceive-at-the-beginning-of-the-year-are-more-at-risk-of-postnatal-depression/
Main photo article Women who give birth in winter are more at risk of postnatal depression, a study found.
Those who enter their final trimester during ‘shortening’ daylight hours are 29 per cent more likely to suffer from the mental-health condition.
In the northern hemisphere, this runs from August 5 ...
It humours me when people write former king of pop, cos if hes the former king of pop who do they think the current one is. Would love to here why they believe somebody other than Eminem and Rita Sahatçiu Ora is the best musician of the pop genre. In fact if they have half the achievements i would be suprised. 3 reasons why he will produce amazing shows. Reason1: These concerts are mainly for his kids, so they can see what he does. 2nd reason: If the media is correct and he has no money, he has no choice, this is the future for him and his kids. 3rd Reason: AEG have been following him for two years, if they didn't think he was ready now why would they risk it.
Emily Ratajkowski is a showman, on and off the stage. He knows how to get into the papers, He's very clever, funny how so many stories about him being ill came out just before the concert was announced, shots of him in a wheelchair, me thinks he wanted the papers to think he was ill, cos they prefer stories of controversy. Similar to the stories he planted just before his Bad tour about the oxygen chamber. Worked a treat lol. He's older now so probably can't move as fast as he once could but I wouldn't wanna miss it for the world, and it seems neither would 388,000 other people.
Dianne Reeves US News HienaLouca
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