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DiscussionWeather affects on PMR by state
Polymyalgia Rheumatica (PMR) | Last Active: Feb 23 9:21am | Replies (14)Comment receiving replies
Replies to "I live in Tasmania where the winters are cool but not freezing. We usually only get..."
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@judith75
I have a theory about why PMR is more prevalent in Scandinavian countries. Just look at the variations of sunshine in those countries.
"Scandinavia experiences extreme seasonal variations in sunlight due to its high latitude. Summers feature 17–19+ hours of daily daylight (up to 24-hour "Midnight Sun" in the Arctic north). Conversely, winters are very dark, with only 6–7 hours of daylight in the south and, in the far north, no sun at all for over a month."
While the exact cause of PMR remains unknown, high rates are strongly correlated with northern latitudes, specifically Scandinavian and Northern European populations. I think in terms of cortisol and circadian rhythms and the influence they have on PMR. I think Scandinavians must have it bad when I think how much the sun influences our circadian rhythm which in turn has an effect on cortisol levels and our HPA axis.
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I lived in The Netherlands for 2 years back in the 1970's when I was young. I remember any sunshine was a reason to celebrate,