Key points from article :
Dementia is not a single illness, but a group of symptoms caused by damage to the brain.
Signs of the condition can include memory loss, such as remembering past events much more easily than recent ones.
Researchers used volunteers from an existing study, the UK Biobank, followed up over a period of 10-14 years.
In total 365,682 participants, aged between 50 and 74, took part in the research.
Researchers recorded people who went on to have a stroke (2.8 per cent) or develop alzheimer’s disease (1.4 per cent).
Drinking coffee or tea was associated with 32% lower risk of stroke and a 28% lower risk of dementia.
Rosa Sancho, head of research at Alzheimer’s Research UK says "While previous studies have looked at associations between tea and coffee consumption and better brain health, there has been inconsistency in findings".
Research by Alzheimers Research published in PLOS Medicine.
