Low income and poor diet linked to accelerated ageing

A new study of the DNA of people living in Glasgow suggests that earning less than the average wage and eating an unhealthy diet could accelerate the ageing process. The study, conducted by the University of Glasgow in collaboration with the Glasgow Centre for Population Health, compared the length of telomeres in blood samples taken from 382 Glaswegians from the most and least deprived parts of the city. Telomeres, the tails on the ends of chromosomes, shorten throughout a person's life and can be used as a measure of the ageing process. Over a 10-year period, telomeres shortened by 7.7% in people whose household incomes were less than £25,000, but only 0.6% in people with greater incomes. In those living in rented accommodation, telomere length was reduced by 8.7% compared to 2.2% in those who owned their homes. The telomeres of people with the poorest diets were shortened by 7.7%, compared to 1.8% in those with a better diet. It is hoped that the findings will help to create a test which can be used for faster feedback on the effects of public health improvement measures.