A neurologist has revealed the three everyday habits he refuses to do, including one that millions of people admit to doing every single night.

Dr Bing, a neurologist, physician-scientist and epidemiologist who shares health guidance with his 200,000 followers, recently lifted the lid on the practices he actively avoids to protect his brain – starting with wearing headphones or earbuds to bed.

In advice that quickly sparked debate among viewers, Dr Bing explained that while drifting off to a podcast or white noise may feel harmless, it can quietly cause long-term damage if done incorrectly.

While he acknowledged that many people rely on sound to fall asleep, Dr Bing warned that volume is critical.

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‘If you’re one of those people who wears headphones to bed, just make sure that the sounds that you’re playing are quiet and not loud, because loud sounds can damage hair cells in your inner ear, and over time, can raise your risk, of hearing loss, and dementia,’ he said.

Hearing experts have long warned that once the delicate hair cells in the inner ear are damaged, they do not regenerate, making hearing loss permanent.

Worryingly, a Johns Hopkins study that tracked 639 adults for nearly 12 years found that mild hearing loss doubled dementia risk. Moderate loss tripled the risk.

But volume isn’t the only concern. According to Dr Bing, wearing earbuds or headphones for hours on end, particularly overnight, can create the perfect environment for bacteria to thrive.

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‘Also, wearing earbuds and headphones for hours can trap moisture and bacteria, which then increase the risk of developing an infection,’ he explained.

Poorly fitting headphones may pose an additional risk, especially if they rub or apply pressure to the ear canal night after night, they can damage the skin inside the ear.

In severe cases, repeated trauma can restrict blood flow and lead to tissue damage, a rare but serious condition known as necrosis, where skin cells die and leave behind dark lesions.

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Dr Bing also warned that sleeping with sound playing through the night may interfere with one of the brain’s most important functions – sleep.

‘If you’re listening to loud sounds during sleep, it might interrupt your deep sleep and disrupt your lymphatic system, which is your brain’s nightly cleaning cycle that cleans out toxins,’ he said.

The advice struck a nerve with viewers, many of whom admitted they rely on ear-based devices to get any rest at all.

‘Help, I have a partner who snores so loud that only wearing my noise cancelling AirPods works to fall asleep,’ one person commented.

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‘Umm I wear earplugs to bed every night, I wonder if it’s also bad?’ another asked.

Dr Bing’s second non-negotiable habit centres on oral health, which is something he says many people underestimate when it comes to protecting their brain.

His thorough manual flossing, water flossing and brushing, comes off the back of emerging research that continues to link oral health with serious neurological outcomes.

‘A 2025 study found that people with gum disease and cavities had almost doubled the risk of stroke. And other studies have linked poor oral health to dementia and cognitive decline.’

While he was careful to point out that correlation doesn’t equal causation, Dr Bing said the pattern is too consistent to ignore.

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His third rule may come as a surprise, but Dr Bing says it’s something he sees the consequences of far too often.

‘I don’t sit on the toilet for than five minutes,’ he said.

Lingering too long, particularly while straining, he said can cause blood to pool in the legs and lead to a sudden drop in blood pressure.

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‘Not enough blood going to your brain can cause someone to faint. Unfortunately, I see examples of this almost every week,’ he explained.

While he acknowledged that people with chronic bowel conditions may not have a choice, his message to everyone else was clear to refrain from scrolling and lingering too long in the bathroom.

The comment section quickly filled with relatable reactions – and plenty of people tagging their partners.

‘Gonna send this to my husband so he stops lingering on the toilet,’ one viewer joked.

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Others admitted the video had already prompted a rethink of their bedtime habits, with many questioning whether their nightly earbuds were doing harm than good.