Why is there more hypertension in winter?
Why are there more hypertension in winter? Cold it increase blood pressure? While low temperatures play a role in blood pressure. But it is mainly changes in lifestyle occur during winter, which are responsible for this phenomenon.
Hypertensives are more numerous in winter
In winter, more or less voluntary and conscious, or aion items,we change our lifestyles. This contributes to the increase in hypertension in winter.
This observation was made from a population of U.S. veterans. Nearly 450,000 veterans with hypertension were followed for five years.
Hypertension is defined as a systolic blood pressure above 140 mm Hg and a diastolic pressure above 90 mm Hg for at least three consecutive days (or 14 / 9 cm Hg). An appropriate care led to a normalization of blood pressure in a growing number of subjects. However, still a significant difference in the number of hypertensive between summer and winter. Thus, during the winter, the number of hypertensive patients not reaching target blood pressure numbers is higher than 8%.
The subjects were recruited in 15 U.S. cities located at different latitudes, climatic variations can not explain this discrepancy. Indeed, this difference of 8% in the number of hypertensive patients in winter and summer is the same in New York or Miami. The drop in winter temperature does not explain this phenomenon.
The weight and physical inactivity are involved in the winter increase of hypertension
In contrast, the lifestyle is well placed to reflect this change in blood pressure. Indeed, during the winter, we tend to gain weight, eat more and more heat in summer. Similarly, physical activities are often lower in winter compared to summer.
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