Hydration for brain health
Learn about the connection between hydration, healthy ageing and day-to-day brain function.
Did you know that hydration can affect how your brain functions day to day? Your brain relies on water to carry out its essential tasks – from processing information and maintaining concentration, to regulating mood and alertness. Even mild dehydration can leave you feeling tired, less focused and struggling to think clearly.
As we get older, staying hydrated can become more challenging. A reduced sense of thirst, certain medications and some health conditions can all make older adults more susceptible to dehydration. Understanding the connection between hydration and brain health can help you take simple steps to support your overall wellbeing.
What's the link between hydration and brain health?
Water plays an important role in lots of bodily functions, including helping the brain work efficiently.
When you're well hydrated, it's easier for your body to transport nutrients, remove waste products and support normal physical and mental functioning. When fluid levels become too low, you might notice changes in the way you think and feel.
Some people might experience:
- Headaches
- Brain fog
- Reduced alertness
- Difficulty concentrating
- Mental fatigue
- Temporary confusion
These symptoms can often improve once your hydration levels are restored. However, persistent changes in memory, thinking or behaviour should always be discussed with a healthcare professional.
Simple ways to stay hydrated
Supporting your brain health doesn't have to be complicated. Small habits can make a big difference, and when it comes to hydration, that can look like:
- Drinking regularly throughout the day – don't wait until you're thirsty before reaching for a drink
- Keeping water within reach – a reusable water bottle or glass nearby can act as a helpful reminder to yourself
- Including water-rich foods in your diet – cucumber, melon, oranges, tomatoes and strawberries can help contribute to your daily fluid intake
- Taking extra care during hot weather – your body loses more fluid when you sweat, which increases your hydration needs
- Enjoying a variety of fluids – water is a staple, but milk, tea, coffee, sugar-free squash and soups can also contribute to your overall fluid intake
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Hydration is just one piece of the puzzle
While staying hydrated is important, brain health is influenced by lots of different factors. You might want to learn more about:
FAQs
Yes, dehydration can sometimes contribute to confusion, reduced alertness and difficulty concentrating, particularly in older adults. However, there are many contributing factors, so if you are experiencing confusion, it's important not to assume dehydration is solely responsible. If symptoms are persistent, worsening or concerning, you should seek medical advice.
As we age, our bodies naturally undergo changes that can increase our risk of dehydration, such as a reduced sensation of thirst, reduced mobility, long-term health conditions and medications that affect fluid balance. Because of this, dehydration can sometimes develop gradually and go unnoticed until symptoms appear.
There is no single amount of water that suits everyone. Fluid needs vary depending on age, activity levels, health conditions and environmental factors such as the weather. A good approach is to drink regularly throughout the day and stay alert for signs of dehydration.
There is no single amount of water that suits everyone. Fluid needs vary depending on age, activity levels, health conditions and environmental factors such as the weather. A good approach is to drink regularly throughout the day and stay alert for signs of dehydration.
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