Source: NHSThey identified relative brain age, which is an individual's brain age based on MRI measurements, compared to the average brain age of their peers. Each additional gram of alcohol consumption per day was linked with 0.02 years of additional brain age. Those who smoked on most or all days had a higher relative brain age than those who smoked less frequently or not at all. The authors said the changes in brain age are 'moderate', and caution that various other environmental and genetic factors may impact brain age. 'Perhaps the more interesting result is that people who drink three or four times per week have a brain age indistinguishable from those who abstain, whereas those who drink daily have a measurably higher brain age.

Source: Daily Mail January 30, 2020 16:01 UTC