Figures released today by the Office for National Statistics reveal a 30% increase in the number of suicides in Wales from 2009 to 2011.
There were an average of 10.7 deaths per 100,000 people in 2009, which increased to 13.9 deaths per 100,000 in 2011.
Statisticians say this is the highest suicide rate seen in Wales since 2004.
The 2011 census shows fewer people speaking Welsh, most saying they are Welsh, fewer described as religious, and more cars on our roads.
Read the full storyPeter Stokes, from the Office for National Statistics, says changing numbers of Welsh speakers in different parts of the country can partly be explained by migration within Wales.
The census figures show Wales compares badly with England in terms of people's healthiness.
The number of people in Wales who can speak, read and write in the Welsh language has fallen over the last ten years. It dropped by 27,000, according to census figures released this morning.
According to the 2011 figures:
Today's census figures will focus on international migration, ethnic groups and religion - and the Welsh language.
Some parents like Rhian Cecil hope it'll lead to more Welsh medium and bilingual schools over the next ten years.
"It's really important for us as Welsh speakers to be stood up and counted".
"Hopefully all the figures can help local councils create more provision".
Key information about Welsh life over the past decade will be released today from the 2011 Census.
Interesting areas could include Welsh language and national identity, ethnicity, religion, migration and health.
The first release of 2011 Census data in July provided household and population estimates - by age and sex - for Wales and its local authorities.
It revealed that Wales' population now exceeds three million - an increase of five per cent in the past decade.
The latest figures will be published by the Office for National Statistics at 9.30am.
