The Head of the Dietetics and Nutrition Department at Alimosho General Hospital in Lagos, Nigeria, Mrs Oludayo Coates, has advised the public to practise moderation in water consumption, warning that excessive intake can lead to serious health issues.
Speaking in an interview with the News Agency of Nigeria (NAN) on Tuesday, Coates noted that while hydration is vital, many people underestimate the risks associated with drinking too much water.
She explained that excessive water intake can cause a dangerous condition known as hyponatraemia — an electrolyte imbalance that occurs when the body’s sodium levels become too diluted due to excess water. The condition, she warned, can be life-threatening.
In addition to hyponatraemia, overconsumption of water may also lead to symptoms such as a bloated stomach, muscle weakness, vomiting, and drowsiness.
“Too much of everything is harmful, hence the need for moderation in our intake of water and food to ensure healthy living,” she stated.
Coates also emphasised the importance of access to clean, potable water, describing it as fundamental to human health and survival. She cited the United Nations, which has highlighted water’s role in sustainable development, energy and food production, healthy ecosystems, and human well-being.
Quoting recommendations from the National Academy of Science and General Medicine, Coates advised that daily water intake should be around 3.7 litres for men and 2.7 litres for women—equivalent to roughly 13 and nine cups, respectively.
She further warned that inadequate water consumption can lead to dehydration, which may manifest as headaches, dizziness, dry cough, elevated heart rate, and in severe cases, urinary tract infections, kidney stones, or even kidney failure.
Coates added that water needs vary depending on factors such as climate, body weight, environment, and a person’s level of physical activity.
“We should take water when thirsty and also at intervals to ensure well-being and proper function of the body system,” she concluded.