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Seasonality of hypertension

Yassar Y Al-Tamer1, Jasim M T Al-Hayali, Eman A H Al-Ramadhan

  • 1Department of Biochemistry, Ninevah College of Medicine, University of Mosul, Iraq. yassar_altamer@yahoo.co.uk

Journal of Clinical Hypertension (Greenwich, Conn.)
|February 8, 2008
PubMed

Insights

Seasonal temperature significantly impacts cardiovascular health. Colder weather is linked to higher blood pressure and serum cholesterol, but lower high-density lipoprotein cholesterol (HDL-C) levels in hypertensive patients.

Area of Science:

  • Cardiovascular Physiology
  • Environmental Health
  • Clinical Medicine

Background:

  • Essential hypertension is a prevalent condition with complex influencing factors.
  • Environmental variables, such as temperature, may play a role in cardiovascular regulation.
  • Understanding these influences is crucial for managing hypertension and cholesterol levels.

Purpose of the Study:

  • To investigate the relationship between daily temperature and key cardiovascular risk factors.
  • To assess how blood pressure, serum total cholesterol, and HDL-C levels fluctuate with ambient temperature over a year.
  • To determine seasonal patterns in these parameters for individuals with essential hypertension.

Main Methods:

  • A longitudinal study followed a cohort of controls and patients with essential hypertension for one year.
  • Four data collection points were scheduled across different day temperatures.
  • Measurements included blood pressure, serum total cholesterol, and high-density lipoprotein cholesterol (HDL-C).

Main Results:

  • A significant inverse correlation was observed between mean blood pressure and day temperature.
  • Serum total cholesterol levels also showed a significant inverse relationship with day temperature.
  • High-density lipoprotein cholesterol (HDL-C) exhibited a significant direct relationship with day temperature.

Conclusions:

  • Seasonal variations in temperature influence blood pressure and lipid profiles in patients with essential hypertension.
  • Colder seasons are associated with elevated blood pressure and serum total cholesterol.
  • Lower high-density lipoprotein cholesterol (HDL-C) levels are observed during colder periods, suggesting a seasonal cardiovascular risk cycle.

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