Blood pressure, heart rate and melatonin cycles synchronization with the season, earth magnetism and solar flares

Germaine G Cornelissen-Guillaume, F. Halberg, R. B. Sothern, D. C. Hillman, J. Siegelová

Research output: Contribution to journalReview articlepeer-review

22 Scopus citations


Three spectral components with periods of about (∼) 0.41, ∼0.5 and ∼1.0 year had been found with serially independent sampling in human circulating melatonin. The time series consisted of around-the-clock samples collected for 24 hours at 4-hour intervals from different patients over several years. Some of these components had been found to be circadian stage-dependent, the daytime measurements following mostly a circannual variation, whereas a half-year characterized the nighttime samples. The latter were incorporated into a circasemiannual map. The relative brevity of the series prevented a check for the coexistence of all three spectral components, even if each component seemed to have a raison d'être. In time series of transdisciplinary data, a 1.00-year synchronized component is interpreted as representing the seasons. The half-year may qualify the circannual waveform, but it is also a signature of geomagnetics. An ∼0.41-year (∼5-month) component is the signature of solar flares. It has been called a cis-half-year (cis = on this side of a half-year) and may be detected only intermittently. Charles L. Wolff predicted the existence, among others, of ∼0.42- and ∼0.56-year components as beat periods of rotations at different solar latitudes. The multiple components characterizing circulating melatonin could also be found in a (to our knowledge unique) data set of a clinically healthy scientist (RBS). Herein, we focus on vascular data self-measured by RBS as he aged from ∼20 to ∼60 years. A multi-component model consisting of cosine curves with periods of 0.41, 0.50 and 1.00 year was fitted to weekly means of systolic (S) and diastolic (D) blood pressure (BP) and heart rate (HR) collected ∼5 times a day over 39 years by RBS. All three components can coexist for a while, although all of them are nonstationary in their characteristics and come and go by the criterion of statistical significance. Intermittently, BP and HR are synchronized selectively with one or the other aspect of RBS' physical environment, namely the seasons (at ∼1.0 year), earth magnetism (at ∼0.5 year) and/or solar flares (at ∼0.42 year). Cosmic-biotic transfer of information, albeit hardly of energy (the biospheric amplitudes are very small) may be mediated in this set of frequency windows. As found earlier, RBS' circulation is also frequency-trapped environmentally in multidecadal windows, HR being locked into the transtridecadal Brückner, or rather Brückner-Egeson-Lockyer, BEL sunspot and terrestrial weather cycle, while his BP follows Hale's didecadal cycle in the changing polarity of sunspots. The ∼0.41-year HR cycle may be associated with changes in solar flares, the cis-half-year amplitude of HR showing a cross-correlation coefficient of 0.79 with the total solar flare index (from both solar hemispheres) at a lag of ∼3.2 years. The super-posed time courses of these two variables indicate the presence of a shared Horrebow-Arago-Schwabe sunspot cycle of ∼11 years, the cis-half-year in HR being more prominent after the total solar flare index reaches its ∼11-year peak. Differences in the time-varying behavior of BP vs. HR are also described.

Original languageEnglish (US)
Pages (from-to)16-32
Number of pages17
JournalScripta Medica Facultatis Medicae Universitatis Brunensis Masarykianae
Issue number1
StatePublished - Jun 28 2010


  • Blood pressure variability
  • Earth magnetism
  • Heart rate variability
  • Melatonin cycles


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