Temperature swings raise stroke risk, according to a major study from Taiwan’s National Health Research Institutes (NHRI). The institute released the findings on Monday, warning the public about weather-related health risks.
Director Sytwu Huey-kang confirmed that NHRI researchers analyzed data from over 1.1 million first-time stroke patients. The study spanned the past 20 years and focused on how sudden weather changes affect stroke risk.
Researcher Wu Wei-de explained the main findings. When temperatures rise by more than 6°C or fall by over 14°C in two days, stroke risk doubles.
He added that extreme temperatures alone can also increase danger. Readings above 35°C or below 10°C double the likelihood of a stroke.
Since temperature swings raise stroke risk, Wu urged stronger health monitoring. He stressed the need to protect seniors and people with chronic conditions during seasonal transitions.
Hot weather can cause dehydration and thickened blood, which may lead to cardiovascular problems. Meanwhile, cold air increases blood pressure and the chance of hemorrhagic stroke.
Wu emphasized how both extremes endanger public health. He called on authorities to include weather warnings and health alerts in national policy.
NHRI’s research aligns with global trends. Stroke remains the second leading cause of death worldwide since the 1990s. In Taiwan, it ranked fifth in 2022, with over 12,000 deaths reported.
To reduce these numbers, hospitals in Taiwan have introduced new treatments. In November, Taoyuan General Hospital launched a stroke protocol using clot-busting drugs within 4.5 hours of onset.
Patients also receive repetitive magnetic brain stimulation to support recovery. Rehabilitation expert Hsu Wei-ching said the treatment activates damaged brain cells and aids speech and movement.
As temperature swings raise stroke risk, Taiwan faces rising health challenges, especially in its aging population. Officials and medical experts are urging immediate public health action.
