With temperatures rising nationwide, Canadians are being urged to recognize the symptoms of heat stroke and heat exhaustion.
Environment Canada has issued heat warnings across parts of British Columbia ahead of the weekend. Vancouver is set to hit the low 30s, while Kamloops braces for scorching temperatures of up to 40 degrees Celsius next week—a level not typically seen until August last year in Canada.
This heat isn't confined to the west coast. While warm days are great for outdoor activities, they also pose health risks, especially for young children, seniors, and individuals with chronic health conditions.
Glen Kenny, a professor at the University of Ottawa, emphasizes the danger of heat, calling it a "silent killer." As temperatures rise, heat-related illnesses like heat stroke and heat exhaustion become more prevalent during the summer months. Here’s what you need to know about these conditions.
Heat exhaustion and heat stroke are serious conditions that can occur when your body overheats and struggles to cool down. Heat exhaustion typically happens during strenuous physical activity in hot, humid weather. Symptoms include headaches, nausea, dizziness, thirst, heavy sweating, and elevated body temperature.
On the other hand, heat stroke is the most severe heat-related illness and can be life-threatening. It occurs when your body's temperature regulation fails entirely. Glen Kenny explains that during heat stroke, the body relies solely on sweating for cooling, which strains the heart and cardiovascular system.
When heat stroke strikes, the core body temperature can soar above 40 degrees Celsius, increasing the risk of permanent disability or death the longer it persists. Symptoms include confusion, slurred speech, loss of consciousness, profuse sweating, and even seizures.
Elderly individuals are particularly vulnerable to heat-related illnesses, often because they may not have air conditioning or use it inadequately. Kenny underscores the importance of checking on elderly family members during hot days, especially those living alone. Aging diminishes the body's ability to regulate heat, making older adults more susceptible to heat stroke.
People with chronic conditions like diabetes are also at heightened risk during heat waves due to the impact of high temperatures on blood glucose levels. Additionally, young children, outdoor workers, and individuals engaging in strenuous activities in the heat face elevated risks of heat exhaustion and heat stroke.
If you encounter someone experiencing heat stroke, it's crucial to act quickly. Call 911 immediately for medical assistance. The Canadian Red Cross advises moving the person to a cooler place, loosening or removing tight clothing, fanning the skin, and applying cool water to help lower body temperature.
For heat exhaustion, remove the affected person from the heat, loosen or remove tight clothing, provide cool water to drink, and use fans or ice packs to cool the body.
Tips for Staying Safe in Hot Weather Preventing heat-related illnesses begins with precautionary measures. Wear lightweight, loose-fitting clothing, minimize outdoor activities during peak heat hours, seek shade or air-conditioned spaces, apply sunscreen, and stay hydrated by drinking plenty of water. Never leave people or pets inside parked cars, as temperatures inside can escalate dangerously fast.
Kenny emphasizes that even fit individuals can succumb to heat illness unexpectedly, citing incidents where athletes and laborers have collapsed from heat stress despite their presumed resilience. He also advises travelers to be mindful of extreme temperatures when visiting regions like Europe, where heat combined with fatigue or jet lag can heighten vulnerability to heat-related illnesses.
Understanding these risks and taking appropriate precautions can help everyone stay safe and enjoy the summer months without falling victim to the dangers of excessive heat.
