Sudden temperature changes can disrupt blood pressure regulation, leading to dizziness, nausea, headaches, and even increased cardiovascular risks, warns Dr István Barna, chief physician at Semmelweis University’s Department of Internal Medicine and Oncology.
Blood vessels expand in warm weather, lowering blood pressure, while cold causes them to constrict, raising it. Semmelweis studies show blood pressure readings average 3–5 mmHg higher in winter, meaning patients should adjust medications seasonally. Dr Barna advises those with hypertension to take a blood pressure monitor on holiday, stay hydrated, avoid alcohol and energy drinks, and allow time to adapt before exercising in new climates.
The importance of this topic was highlighted by the formation of a special working group at the latest European Society of Hypertension Congress to study how environment affects blood pressure and heart health.
Source: Semmelweis University
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