Neurologist warns of 'most overlooked' risk factor for dementia - how to prevent it

A neurologist has warned of the "most overlooked" risk factor for a devastating condition. According to the expert, there are ways to help prevent this from becoming a problem.

Dementia is a syndrome, or a group of associated symptoms, linked to the ongoing decline of the brain. Most common in people over the age of 65, it can result in issues such as memory loss and behavioural and personality changes.

Although it is more common the older we get, age is far from the only risk factor. Research has shown that around 45% of dementia cases are preventable with lifestyle changes.

And in a video uploaded to social media platform TikTok, neurologist Dr Baibing Cheng - who is better known as Dr Bing - shared some of the key factors that can raise your risk of dementia. He said: "Dementia isn't just something that comes with age.

"There are real ways to reduce your risk and keep your brain healthy for years to come. You probably heard of regular exercising and eating a healthy diet to prevent dementia but here are some lesser known strategies to protect your brain."

He stated that hearing loss is "one of the most overlooked risk factors" for dementia. Dr Bing explained: "Even mild hearing loss can significantly increase your risk."

Getting your hearing regularly checked is therefore important. He continued: "If you're having trouble hearing,don't wait get it checked out and consider hearing aids if needed. It's about more than just hearing, it's about keeping your brain engaged and active."

His advice is backed by a 2024 study from The Lancet which listed hearing loss as a major risk factor. Dr Bing also shared other ways to lower your chances of developing dementia.

Get good quality sleep

He said: "Sleep is when your brain clears out toxins and repairs itself. Poor sleep can increase your risk of dementia so aim for seven to nine hours of quality sleep each night.

"If you have sleep apnoea, make sure that's being treated."

Stay social

"Isolation is a risk factor for dementia and staying connected with friends, family and your community, whether it's a weekly call or spending time with your loved ones, social engagement keeps your brain sharp," he said.

Learning new skills

Dr Bing said: "It's essential for brain health, whether it's picking up a new language or learning to play an instrument, keeping your mind active creates new brain connections. The more you challenge your brain the better it can fend off cognitive decline."

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Protect your head

"This may seem obvious but head injuries can significantly increase the risk of dementia, whether you're biking, skiing or playing sports," he said. "Wear a helmet to protect your brain from trauma, even minor head injuries can have long term effects."

Maintain good oral health

He added: "This might be surprising to some people but gum disease and poor dental health are linked to a higher risk of dementia. Infections in the mouth can lead to inflammation which affects the brain over time. So keep up with the regular brushing, flossing and dental visits."