There are a number of different types of dementia, and the most common in the UK is Alzheimer’s disease.
Diagnosing the condition early could help to slow down the condition’s progress.
Making some small lifestyle changes could lower your chances of developing Alzheimer’s in later life.
You could be at risk of the neurodegenerative condition if you find it increasingly difficult to read.
“Although it’s commonly known to affect adults 65 years and older, up to five percent of those diagnosed have early onset Alzheimer’s disease, sometimes called younger-onset,” it said. “This generally means that the person diagnosed is in their 40s or 50s.
“It can be difficult to obtain a true diagnosis at this age because many symptoms may appear to be a result of typical life events such as stress.
“Vision problems can occur [in Alzheimer’s disease]. This may be as simple as an increased difficulty in reading.
“You or a loved one may also begin to have problems judging distance and determining contrast or colour when driving.”
There’s no certain way to prevent dementia from developing, but there are ways to lower your risk, said the NHS.
Eating a healthy, balanced diet should help to lower your chances of developing dementia.
It’s also important to do enough exercise. Everyone should aim to do at least 150 minutes of moderate-intensity activity every week.
There are around 850,000 people in the UK with dementia, and the condition affects one in every six people over 80 years old.