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Today marks World Mental Health Day (WMHD), an annual campaign designed to raise awareness of mental health issues.
Recognised by the World Health Organisation, WMHD happens on October 10 every year in an effort to open up a dialogue for sufferers.
Each year the campaign has a different theme, with this year's being suicide prevention. Organisers are asking people for just "40 seconds of action to raise awareness of the scale of suicide around the world and the role that each of us can play to help prevent it".
So what is World Mental Health Day 2019 and how can you get involved? Here is all you need to know.
What is World Mental Health Day?
World Mental Health Day is held on October 10 each year, not only to raise awareness of mental health issues but also mobilise "efforts in support of mental health".
According to the WHO, the day "provides an opportunity for stakeholders working on mental health issues to talk about their work, and what more needs to be done to make mental health care a reality for people worldwide".
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Set up in 1992 by the World Federation for Mental Health, WMHD marks each year with a different theme and this year's is suicide prevention.
Why is the theme for World Mental Health Day 2019 suicide prevention?
President of the WFMH, Dr Alberto Trimboli, said suicide prevention was chosen this year because it is the leading cause of death among people aged fifteen to 29.
He said: "It has increased gradually in all parts of the world and, in the past few decades, has reached alarming statistical levels."
According to the WHO, more than 800,000 people die by suicide each year, and our "actions must be geared towards prevention".
He added: "It is often believed that it is only adults who exhibit suicidal behaviours, but it should be made known that many children and young people engage in this kind of behaviour as a result of violence, sexual abuse, bullying and cyberbullying.
"Suicide is a global public health problem that deserves the attention of all the actors in the field of mental health."
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The aim of this is to call on governments around the world to make tackling suicide a priority.
Why is everyone wearing yellow?
As part of the campaign, the WFMH is asking schools, offices, companies and community groups to wear something yellow today in a bid to both raise funds and awareness. Participants are also asking people to use the hashtag #HelloYello.
On top of this, the international symbol for mental health awareness is a green ribbon.