Expert warns against drinking water before bed saying it’s a ‘serious threat’ to health

By Staff 6 Min Read

A sleep expert has warned against drinking water before bed, saying it can lead to a range of health issues including increased stress and a weakened immune system

A sleep expert has warned that drinking water before bed could be a serious health risk.

Ashley Hainsworth of Bed Kingdom explained that while it’s important to stay hydrated throughout the day, drinking too much water, especially before bedtime, can disrupt your sleep and weaken your immune system. He said our body’s internal clock controls various functions, including how much fluid we have in our bodies.

“Hydrating earlier in the day is crucial to ensure that your body has adequate time to process fluids and reduce the likelihood of disruptions during the night,” he says. Ashley warned that drinking lots of water before bed makes your kidneys produce more urine, leading to multiple trips to the bathroom. This can disturb your natural sleep cycle, which could harm your long-term health.

He also highlighted that interrupted sleep prevents the deep and restorative sleep necessary for optimal physical and mental health. “Consistent disruption to our sleep cycle, especially from frequent trips to the bathroom during the night, isn’t just a nuisance – it’s a serious threat to our overall health,” he added.

“It can lead to increased stress, impaired cognitive function, a weakened immune system and even heightened risk of chronic diseases like cardiovascular issues and diabetes. It’s time we prioritise uninterrupted rest for the sake of our well-being.” On the best time of day to load up on water, Mr Hainsworth advises: “Start your hydration early in the morning and maintain a steady intake throughout the day. This way, you’re less likely to feel the need to compensate with excessive water consumption later in the evening.”

He also suggests cutting back on fluids in the hours before it’s time to sleep, saying: “In the two hours leading up to bedtime, gradually decrease your fluid intake. This allows your body enough time to process the fluids, minimising the risk of disruptive bathroom trips.” It’s also advisable to avoid any kind of alcohol or caffeine from the likes of tea, coffee and some carbonated beverages before bed, reports Bristol Live. “Both caffeine and alcohol can interfere with sleep,” Mr Hainsworth warned.

“These beverages act as diuretics, increasing urine production. It’s advisable to limit their consumption, especially in the hours before bedtime.” Mr Hainsworth stressed the importance of establishing a consistent water-drinking routine to optimise sleep. “Creating a hydration routine aligned with your body’s rhythm is key. Respond promptly to thirst, especially earlier in the day. This evens out intake and reduces excessive consumption before bed.”

Adding his bit, he said: “It’s not just about how much you drink, but when and how it fits into your day. By adopting a mindful routine, you can improve sleep quality and overall health.”

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