* https://esrs.eu/wp-content/uploads/2019/03/To_the_EU_Commiss...
I would hazard to guess some of those folks have looked at data for northern Europe and took it into account when forming their conclusions.
Cities in northern Europe, like Stockholm and Oslo, already have sunrise times as late or later than Vancouver will have under permanent DST.
If the effects of shifting the clock an hour are as extreme as purported, then we should already see those negative health effects in populations that live their entire lives under those conditions, but we don't.
I'm not missing the point: the various various folks who study sleep and chronobiology would have (I hope) reviewed all the literature, including studies that cover northern Europe, before coming to their all-year Standard Time conclusion.
A position paper from Society for Research on Biological Rhythms (SRBR) in Journal of Biological Rhythms cites Russian data for example:
> Borisenkov MF, Tserne TA, Panev AS, Kuznetsova ES, Petrova NB, Timonin VD, Kolomeichuk SN, Vinogradova IA, Kovyazina MS, Khokhlov NA, et al. (2017) Seven-year survey of sleep timing in Russian children and adolescents: chronic 1-h forward transition of social clock is associated with increased social jetlag and winter pattern of mood seasonality. Biol Rhythm Res 3–12.
* https://journals.sagepub.com/doi/full/10.1177/07487304198541...
Last time I checked a map (parts/lots of) Russia is just as north as Finland, Sweden, and Norway, and still the Russian government decided to rollback all-year DST.
Perhaps the effects differ in magnitude depending on geographic region, but as a general rule all-year Standard Time appears to be the best policy for most people most of the time.
https://blogi.thl.fi/kellojen-siirtaminen-pysyvasti-talviaik...
Perhaps if Sweden adopted a different policy it would have an even longer life expectancy!
The policy of being between 55 and 69 N? I'm not sure the world is ready for another viking age.
Joking aside, GPs point was that Sweden has long nights and long days. Based on the studies you'd expect life expectancy to be worse there than in more Southern parts, like most of Canada. It isn't.
I find these explanations to these studies so bizarre. We know that there are large populations living significantly further north, who don't get sunlight in the morning in winter, no matter whether there's DST or not. We also know that they get almost perpetual light during summer. If these explanations were true then you would expect a country like Sweden to have an impact on life expectancy and illness from this. But it's not. It's about as rich as Canada and has about the same life expectancy.