A new study has revealed that individuals who do not drink enough water may experience stronger biological responses to stress, marked by elevated levels of cortisol — the body’s primary stress hormone.
The research, conducted by experts at Liverpool John Moores University, compared 16 people who consumed less than 1.5 litres of water daily with another 16 who consistently met recommended fluid intake guidelines. Results showed that those with lower hydration habits released higher cortisol levels during stress tests, even though they did not report feeling thirstier than their well-hydrated counterparts.
The findings highlight the role of hydration in regulating the body’s stress response and overall health. Researchers used the European Food Safety Authority (EFSA) benchmarks, which recommend men consume 2.5 litres of water per day and women two litres. In the UK, the Eatwell Guide suggests six to eight cups of fluid daily, equivalent to 1.5–2 litres.
Experts note that hydration needs may rise in hot weather, during physical activity, or for those recovering from illness, pregnancy, or breastfeeding. They advise keeping a water bottle handy, especially during stressful periods, as a simple step towards better long-term health.
–Input WAM
