The One Year to Go milestone is being marked with a series of images capturing a giant number one figure positioned at some of Scotland's best known spots.
More top news
Youngsters are still consuming too much unnecessary sugar and caffeine, according to the study.
Home Office data offers an incomplete picture of the perpetrators and victims, the National Audit Office (NAO) have said.
The report concludes that nine million adults suffer from constant loneliness, which is as harmful to health as obesity or smoking.