By 10am in the sugarcane fields outside the town of Tierra Blanca in El Salvador, the mercury is already pushing 31°C. The workers arrived at dawn: men and women, young and old, wearing thick jeans, long-sleeved shirts and face scarves to prevent being scorched by the sun’s rays. They are moving quickly between rows of… Read more

For a long time people have been told that caffeine is a diuretic. For some, this translates into advice to avoid or remove caffeinated beverages from the diet of people at risk of dehydration, or during periods of extreme summer heat. While possibly well meaning, this advice is wrong. By definition, a diuretic is a… Read more

Water is essential for human life. It accounts for for 50-70% of our body weight and is crucial for most bodily functions. Any deficit in normal body water – through dehydration, sickness, exercise or heat stress – can make us feel rotten. First we feel thirsty and fatigued, and may develop a mild headache. This… Read more

Scientists have identified the structure of a key protein in the brain that is involved with hydration and may help control body temperature. The findings suggest the protein could be used as a target to develop treatments and diagnostic tests for health problems associated with the imbalance of bodily fluids, a condition commonly seen in… Read more