Heatwaves can place significant strain on the body, increasing the risk of dehydration, heat exhaustion, and—rarely—heatstroke. Young children, older adults, and those with chronic conditions are particularly vulnerable.
What happens in the body?
High temperatures impair your ability to regulate body heat. You lose fluids and electrolytes through sweating, which can lead to dehydration, low blood pressure, and kidney strain. Certain medications (e.g. diuretics, antihypertensives, antidepressants) can worsen this.
Key prevention steps
- Drink water regularly (aim for pale urine)
- Avoid alcohol and excess caffeine
- Stay indoors during peak heat (11am–3pm)
- Keep living spaces cool (shade, ventilation)
- Ensure children and older adults drink fluids frequently
Recognising illness
Heat exhaustion signs:
- Headache, dizziness, nausea
- Heavy sweating, weakness
- Fast heart rate or muscle cramps
If you notice any of these signs, manage promptly with fluids, rest, and cooling.
Red flags (urgent care):
- Confusion or agitation
- Collapse or reduced consciousness
- Very high temperature (>40°C)
- Little or no sweating
These may indicate heatstroke, a medical emergency.
Seek GP advice if you experience:
- Ongoing vomiting or inability to hydrate
- Signs of dehydration (dry mouth, reduced urine, lethargy)
- Worsening symptoms or underlying conditions
With simple precautions and early recognition, most heat-related illness is preventable.
Please do not hesitate to contact us if you have any concerns or would like to speak to one of our GPs about your health.