Pragmatic 21A: Daylight Saving Follow-up 1

20 July, 2014


Follow up (Part A) to Daylight Saving where we quickly touch on Seasonal Affective Disorder and whether Daylight Saving actually contributes to it. Thanks for the feedback Andrew McAuliffe.

Transcript available
This is pragmatic follow-up part a of episode 21 daylight saving on John Geagea follow-up for the month of July is proudly sponsored by life X spelt alli fracture there are smart energy-efficient Wi-Fi enabled LED light bulb that you can control with my phone you can change the brightness colour and tone from the app and becomes the range of cool effects and it's really great fun to use visit life X against God alli and use the coupon code pragmatic the 15% of the total price of your order if your developer there's SDKs iOS Andrew and Ruby and is a competition currently open to 24 July 2014 so if you submit an app for controlling life X bulbs by that deadline you're running to win enough life Xbox to fill every light socket in your house as well as get free advertising furans through life X check out the blog it's for more information and be quick so I had some feedback from our violet feedback form from Andrew Micallef I think it's pronounced I hope I'm getting that right please correct me for not are regarding the issues regarding our of of visual seasonal affective disorder now I did I didn't go much death into that in the episode just talking about the mechanics of daylight saving rather than its effect on people but it's a very good point I actually I did consider talking about but I didn't now putting in the episode so are now had some feedback about I think it says it's relevant to talk about is briefly at least and as these affect seasonal affective disorder there is a link in the show notes to tell you more about the idea is that people's moods will change based on the seasons so during summertime everything is all little of sunlight it's all bright and green well presumably this is a drought on a listen live the middle of the desert in any case are whereas in winter it is you it's cold days less sunlight because the days are shorter everything is brown or looks like it is dead or dying leaves as well describe describe me a Calgary in the middle of winter anyway and wanted as a fresh beautiful sprinkle of snow on the ground is a beautiful fairy tale white and that's of course before attending the slush and then the car breaks that little illusion but anyway the bottom line is that's our sad seasonal affective disorder affects a not insignificant percentage of the population is less common in countries like a streetlight like Australia however it generally seems to be intemperate and sub- temperate or you subarctic claimants but the funny thing is that if you look at it in relation to daylight saving there doesn't seem to be much of a direct connection so in having a look into this what what would cause our seasonal affective disorder the most predominant theory is that it's about the bodies internal body clock sometimes referred to as the circadian rhythms and the been a bunch of studies that have shown that there seems to be a bit of a weak link between the amount of light that your eyes are exposed to during the day and a disruption of the body's natural circadian rhythms so you would think that a person's latitude where they leave would have living in heavily influence this now what they've done a group of people die much estate is a link in the show notes if you have a look into it as a study of people that lived in Fairbanks at Alaska and it's very close to the Arctic Circle and that they basically in some time they get in the worst outside the Westside wintertime they get only four hours of sunlight of that is not even full strength sunlight that they will be including all your twilight so with only four hours of sunlight each day and they then compared that with a town in New Hampshire and this particular when I looked at didn't specify the town but let's just say New Hampshire and New Hampshire has in the worst part of the winter nine hours of sunlight now which is still not a lot really that more than double that you would think that there would be more impact on the people living in Fairbanks more people would have SARS A.D. then they were New Hampshire but that is not the case so the study concluded proximally 9% of people in Fairbanks roof are the hat were diagnosed with a form and go ranging from mild to severe but a form of seasonal affective disorder and it was exactly the same percentage or if not within and it was within about 67.6.7 percent of that was found in New Hampshire to have SAT so statistically owing is more accenting as a 9.69.7 percent of that in right down the number but the point is that that's counterintuitive and this is the problem is that people say daylight saving must have an impact on young people circadian rhythms but if it's true surely that would happen because daylight saving will come in in the centre sometimes you have to wake up early and went starker but because it is brought in at a time at which you will it'll be darker for the first few weeks of daylight saving phenomena got up at six in the morning the days are getting longer and longer so the point at which you're in the middle of daylight saving you be getting up it'll still be sunlight in most places so it would only ever be a temporary situation it would be confusing to the body probably would throw your circadian rhythms out your body clock out are not convinced that it would not significantly differ and if it did if it was noticeable detectable it would only be brief so they haven't clean studies into this it's not conclusive but it seems to suggest that there is either a very weak link or there is in fact perhaps no link so in any case I will thank Andrew for bringing up one up and it wasn't I did consider addressing and now have address that so thanks for the feedback Andrew really appreciate´┐Ż
Duration 6 minutes and 28 seconds Direct Download
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John Chidgey

John Chidgey

John is an Electrical, Instrumentation and Control Systems Engineer, software developer, podcaster, vocal actor and runs TechDistortion and the Engineered Network. John is a Chartered Professional Engineer in both Electrical Engineering and Information, Telecommunications and Electronics Engineering (ITEE) and a semi-regular conference speaker.

John has produced and appeared on many podcasts including Pragmatic and Causality and is available for hire for Vocal Acting or advertising. He has experience and interest in HMI Design, Alarm Management, Cyber-security and Root Cause Analysis.

You can find him on the Fediverse and on Twitter.