James Kaufman, World News Report today, August 14th, 2025.
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Do geomagnetic storms affect blood pressure?
Solar activity might be doing more than just sparking auroras.
A new study in communications medicine suggests it could
be nudging your blood pressure as well.
Researchers in China analyzed more than half
a million blood pressure readings taken over
six years in two mid-latitude cities in China.
They compared those with measurements of the AP index,
a standard measurement of geomagnetic
activity.
The AP index is much like the KP index.
I'm going to explain that to you right now.
The result.
Blood pressure rises and falls in rhythm with magnetic unrest.
The AP index is a logarithmic
cousin of the KP index
and gives a measure of the storminess of Earth's magnetic field.
I'm going to give you some equivalence.
An AP of zero would equal a KP of zero.
A KP of 1 would equal an AP of 4, a KP of 2,
AP of 7, a KP of 3 would equal an AP of 15,
a KP of 4 would equal an AP of 27,
a KP of 5 would equal an AP of 48,
a KP of 6 would equal an AP of 80,
But KP7 would equal an AP of 132.
A KP8 would equal an AP of 207
and a KP9 would equal an AP of 400.
That should be enough to get us going.
Both systolic and diastolic blood pressure showed
a distinctive bimodal pattern with peaks in spring and autumn,
mirroring the seasonal ups and downs of geomagnetic activity.
In years when geomagnetic activity was strong,
blood pressure peaked about one month after the AP index peaked.
During quieter years, the lag stretched to two months.
Now they can't be sure
that other environmental factors weren't at play.
But we found that blood pressure
and geomagnetic activity share distinct seasonal patterns.
Says one of the paper's co-authors from Shandong University,
there seems to be a genuine link
between the two, end quote.
Importantly, the study found no similar multi-month patterns
when looking at air temperature or
PM2.5, two well-known influences of blood pressure.
This chart shows us the six-year AP index.
We talked about how this relates to the KP index,
and let's see, an AP of 20, which was
one of the highest years on average,
would only equal, I guess, a KP index between 3
and 4 on average for that year.
We can also see by this chart that the male's blood
pressure spiked during the higher geomagnetic
...activity periods.
More so than the females.
The authors stopped short of saying
that geomagnetic activity causes high blood pressure.
Their data cannot prove cause and effect.
The group is currently exploring how such a link might work.
One possible mechanism involves modulation
of ultra-low frequency waves,
specifically Schumann resonance waves,
which occur within Earth's magnetosphere.
The fundamental frequency of Schumann resonance
is approximately 7.8 Hz with harmonics around 14.1
20.3, 26.4, and 32.5 hertz.
These fluctuations may interfere
with human brain waves such as the
alpha wave in the 8 to 12 hertz range,
the beta wave in the 12 to 30 hertz range,
and the gamma wave in the 30 to 100 hertz range.
The brain could then modulate
Neuroendocrine activity, for example,
by altering the secretion of hormones, such as vasopressin,
which can gradually influence vascular tone and fluid balance.
Such physiological adjustments may take weeks to accumulate,
potentially explaining the lag of one to two months
or the delay of one to two months.
Between the corresponding data, this right now is just a hypothesis.
Further targeted studies are needed to confirm
and clarify its potential mechanisms.
The study is extensive.
I will leave a link to it in the description below.
If y'all are able to determine
or find out any more information than I have in this study,
please let us know.
We'd be happy to cover it.
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