Heat waves defy limits of human resistance
The year 2025 began recording record temperatures. According to, linked to the European Union’s Climate Observatory, January presented an average of 1.75ºC above the pre-industrial period. In Brazil, the thermal sensation can exceed 50 ° C, according to projections of the USP applied climatology core. Under these extreme conditions, thermal regulation of the human body faces significant challenges. Expert explain that at high temperatures the body dilates blood vessels to increase blood flow to the surface of the skin, facilitating heat dissipation. However, this answer can overload the cardiovascular system, especially in individuals with pre -existing conditions.
Sweating is another natural response to heat, assisting in body cooling. However, excessive perspiration can lead to dehydration, aggravating the risk of complications. Elderly people, children and those with chronic diseases are particularly vulnerable to the adverse effects of high temperatures. To decrease these risks, it is essential to ingest liquids regularly to replace the losses caused by sweat, remain in ventilated or air -conditioned places during intense heat periods, use light and light colors to facilitate perspiration and reflect heat avoid strenuous exercises on warmer hours of the day. Awareness of the effects of high temperatures and the adoption of preventive measures is essential to protect health in a growing scenario.
