Findings of a five year study conducted by experts of the ‘American Heart Association’ reveal that the patients with hypertension have better control over the ‘Blood Pressure (BP)’ during the summer time in comparison to the winter season.

The study observed a difference of 8% in the rate of the ‘Blood Pressure (BP)’ coming to normal range in cases where the patients were treated in the summer season comparing to the patients who were treated during the winters. This difference of rate of returning normalcy proved to be true over a wide range of geographic locations and various climatic conditions.

Blood Pressure

“The bottom line is that regardless of whether you’re in Anchorage, Alaska, or San Juan, Puerto Rico, there is a difference in high BP returning to normal in the winter compared to the summer,” commented Ross Fletcher of Veterans Affairs Medical Center, USA.

Ross Fletcher’s team analyzed and compared the electronic health records of numerous patients from selected fifteen hospitals located in various cities including the cities of Anchorage, Baltimore, Boston, Chicago, Fargo, Honolulu, Portland, San Juan, and Washington DC. In all there were 443,632 patients in these cities being treated for hypertension. The team of researchers conducted a complete analysis of the frequency of recording the ‘Blood Pressure (BP)’ at daily and monthly intervals in order to determine the rate of returning to normalcy levels.

There was an overall increase in the number of patients under treatment who reported their blood pressure returning to normal levels. The rate of increase recorded over a period of five years was 3.91% on an average with all the hospitals included in this study. On the other hand, all the hospitals demonstrated a downfall in this rate during the winter seasons.

Experts including Ross Fletcher suggested that weight and exercise changes may help in explaining the effects of seasonal changes on the levels of blood pressure. Ross Fletcher adds further,” “People tend to gain weight in the winter and lose weight in the summer. People tend to exercise more in the summer and less in the winter.”

Experts also feel that the treatment strategies need to be designed befitting the seasonal changes and their effects on patients. There may be a need to introduce the specific anti- hypertension intervention during the winter months.

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