
Dementia affects about 850,000 people in the UK, according to the NHS.
It’s the name given to a group of symptoms linked to an ongoing decline in brain function.
Alzheimer’s disease is the most common type of dementia to be diagnosed in the UK.
But you could lower your risk of Alzheimer’s and other types of dementia by drinking plenty of water, said the Alzheimer’s Society.
Eating a healthy, balanced diet is one of the best ways to lower your chances of dementia, said the charity.

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As part of that healthy diet, people are advised to cut back on the amount of sugar they eat, look out for hidden salt, and to drink plenty of water.
Everyone should aim to drink between six and eight glasses of water every single day, it said.
“Although getting older is the biggest risk factor for dementia, evidence shows there are things you can do to help reduce your own risk,” said the Alzheimer’s Society.
“These include keeping active, eating healthily and exercising your mind.
“A healthy, balanced diet may reduce your risk of dementia, as well as other conditions including cancer, type 2 diabetes, obesity, stroke and heart disease.
“Eat protein [such as oily fish, beans, pulses, eggs or meat] at least twice a week.
“Drink six to eight glasses of fluid [such as water, lower fat milk and sugar-free drinks] a day.”
Water is a healthy, cheap choice for quenching your thirst, without any hidden calories or sugars, added the NHS.
If you don’t like the taste of water, try drinking sparking water, or simply add a slice of lemon or lime.
Failing that, you can add some flavoured squash (that has no added-sugar), or fruit juice.
You could also lower your chances of developing dementia by keeping physically active.
Exercise is good for the heart, circulation, weight management, and mental wellbeing, said the Alzheimer’s Society.
Everyone should aim for 150 minutes of moderate-intensity aerobic activity every week.
Common dementia symptoms include memory loss, difficulty concentrating or mood changes.
Speak to a GP if you’re worried about the signs or symptoms of dementia.