This might be old news but it’s good to remind ourselves: Eat healthy food and don’t smoke!
Smoking accelerated the ageing of key pieces of a person’s DNA by about 4.6 years. For obesity it was nine years.
These genetic codes are important for regulating cell division and have been linked to age-related diseases.
The study in the Lancet was based on 1,122 twins from a database held by St Thomas’ Hospital in London.