Only about 10 per cent of the population in the global study had both hypertension and high sodium consumption (greater than 6 grams per day). (sciencedaily.com)
If you're one of the 5 per cent of the population who has severe insomnia then you might have your brain's white matter to blame. (newscientist.com)
According to the 2011 census, 16 and 17 year olds make up less than 3 per cent of the population aged over 16. (blog.politics.ox.ac.uk)