Climate change increases global health risks and extreme weather

climate change global warming public health heatwaves stroke risk

Global climate change is increasingly impacting public health and environmental stability. A study published in Neurology, based on medical records from over 200 countries, indicates that extreme temperature fluctuations significantly increase the risk of stroke. Researchers noted that low temperatures can cause vasoconstriction and high blood pressure, while high temperatures can lead to dehydration and impaired blood flow.

Data from Climate Central reveals the scale of heat-related health risks, stating that during the summer of 2026, approximately 1.5 billion people—nearly one in five globally—spent at least 30 days in dangerous temperature conditions. The Copernicus Climate Change Service reported that August was the warmest month on record, with a global average temperature of 16.96°C.

In Poland, these environmental shifts are manifesting through hydrological challenges and weather volatility. Significant water shortages have been reported at 65% of hydrological stations, prompting new legislation to allow the use of reclaimed municipal wastewater for power plant cooling to enhance energy security. Additionally, recent weather patterns show a transition from unseasonably warm autumn days to sudden, sharp temperature drops and increased frost risks.

Entities

Climate Central · Copernicus Climate Change Service · IPCC · Institute of Meteorology and Water Management · NOAA · Neurology · Poland · WMO

Claims

What the coverage asserts, and how many sources carry each claim.

[○ 1 SOURCE] Temperature changes increase the risk of stroke. www.sukcesjestkobieta.pl
[● 2 SOURCES] The global average temperature in August was 16.96 degrees Celsius. polityka.co.pl · smoglab.pl
[● 2 SOURCES] Between June and August 2026, 1.5 billion people spent at least 30 days in dangerous temperature conditions due to climate change. polityka.co.pl · smoglab.pl
[○ 1 SOURCE] High temperatures can cause dehydration, affect cholesterol levels, and slow blood flow, contributing to stroke risk. www.sukcesjestkobieta.pl
[○ 1 SOURCE] Low temperatures can cause blood vessel constriction and increase blood pressure, raising stroke risk. www.sukcesjestkobieta.pl
[● 2 SOURCES] August was the warmest month ever recorded on the planet. polityka.co.pl · smoglab.pl
[● 2 SOURCES] Approximately one in five people globally experienced at least 30 days of dangerous temperatures linked to climate change during the recent summer. polityka.co.pl · smoglab.pl