Eight effects of dehydration you might not be aware of

While many of us understand that staying hydrated is key to good health, the effects of dehydration can extend beyond simply feeling thirsty and having a headache.

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For instance, a recent study led by researchers at Liverpool John Moores University found that people who habitually drank less than the recommended 1.5 litres of water per day showed elevated levels of cortisol - the body’s primary stress hormone.

So, what other effects can dehydration have on the body?

1. BAD BREATH

"While we are familiar with common dehydration symptoms - such as tiredness, headaches, thirst, dizziness, reduced urine output, dark urine, and a dry mouth - there are several lesser-known effects that can occur if dehydration is not addressed," says Dr Naveed Asif, GP at The London General Practice. "For instance, bad breath can result from decreased saliva, which normally helps neutralise bacteria in the mouth."

2. SUGAR CRAVINGS

"It's also common to experience sugar cravings when dehydrated, as the liver requires water to convert glycogen into glucose for energy, leading to lower glucose levels in the body," says Dr Asif.