Summer 2026 is expected to be marked by above-average temperatures and periods of intense rain in several regions of Brazil.
According to forecasts from the National Institute of Meteorology (Inmet), the combination of stronger heat waves and an increase in the volume of precipitation can have direct impacts on the health of the population, requiring increased attention on a daily basis.
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Even though heat and rain are part of the season, the intensity of these phenomena worries experts. According to Dr. Armindo Matheus, medical director of Nova Saúde, the human body reacts sensitively to these climatic extremes.
“The body functions as a balance system. When this balance is disrupted by excessive heat or constant humidity, symptoms can range from mild to severe, especially in more vulnerable people,” he explains.
Extreme heat overloads the body in summer
During heatwaves, the body loses fluids at an accelerated rate, the cardiovascular system is more stressed and the internal temperature tends to increase. This process can lead to dehydration, dizziness, changes in blood pressure, exhaustion, fainting, and worsening of chronic conditions. But often the first signs go unnoticed.
“Frequent headaches, unusual fatigue and darker urine are clear signs that the body is suffering. When a person hydrates and adjusts their routine from the start, they significantly reduce the risk of complications,” emphasizes the doctor.
Read the full report in Saúde em Dia, partner of Metropolises.
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