Researchers at United Kingdom have found that adults drinking less than 1.5 liters of water per day have a more marked reaction to stress. Increased production of cortisol, the hormone linked to physiological tensions, was measured during controlled experiences. These results relaunch the recommendations on the importance of good daily hydration.
A hormonal response amplified in case of dehydration
The study of John Moores University of Liverpool followed two groups subject to stress tests, including a false job interview and mental exercise. Participants drinking less than the recommended contributions have seen their level of cortisol increase by almost 50 % more than those hydrated properly. This phenomenon is explained by the activation of vasopressinehormone released when the body lacks water, which then stimulates the stress response system.
Specialists point out that this mechanism could weigh on mental health. Additional work also evokes a possible impact on serotonin and dopamine, neurotransmitters associated with well-being. This discovery nourishes a broader scientific debate on the indirect effects of dehydration, already studied in contexts such as cognitive performance or sports endurance. Certain publications accessible online also offer practical benchmarks to follow its water consumption and maintain a suitable balance.
Water, a vital element for the body
The importance of hydration is already recognized by the health authorities. The World Health Organization recalls that water represents on average 60 % body weight and intervenes in temperature regulation, transport of nutrients or waste elimination. Insufficient consumption can lead to fatigue, drop in concentration and, in the long term, promote certain metabolic pathologies.
In Francethe National Health Safety Agency recommends approximately 2 liters per day for women and 2.5 liters for men, including the water contained in food. This reference joins the conclusions of the British team, which pleads for more vigilance on a daily basis. Several online accessible studies could serve as a basis for awareness -raising initiatives or public health campaigns.
British researchers believe that hydration remains a simple and accessible factor to better regulate the response to stress.
