| No mention of the CO2 buildup in a bedroom or buildings in general. When I camp in a tent, more airflow, I sleep better.
In a bedroom, the air is stale after a few hours, the UK has small houses unlike Europe and US. Plenty of discussions on CO2 levels on here already:
Higher Levels of CO2 May Diminish Decision Making Performance (2013)
https://news.ycombinator.com/item?id=14738010 Literally Suffocating in Meeting Rooms, A Little
https://news.ycombinator.com/item?id=21237875 On whether changes in bedroom CO2 levels affect sleep quality
https://news.ycombinator.com/item?id=18959796 Is Conference Room Air Making Us Dumber?
https://news.ycombinator.com/item?id=19845029 No mention of Tryptophan intake, tryptophan into the brain can become serotonin and melatonin. Blue light stimulates serotonin production in the brain, a jap study on school kids found when all things equal including diet, they found those with highest serotonin levels walked to school and got more blue light from the sun than those driven to school. Melatonin has an antioxidant effect 4x greater than vit c, it also increase the release of mesenchymal stem cells so the body can repair itself better, which is important when thinking about plastic molecules in the body, because a study suggests plastic binds to stem cells and inactivates the cell making it harder for us to repair. Light pollution within the bedroom from clocks, phones etc can also reduce melatonin compared to a completely blacked out bedroom. The serotonin hypotheses about sleep duration ie little sleep mania, more sleep depression didnt look at CO2 levels. The author needs to be careful what scientific studies are selected and ignored, sleep is massively complex, but I am also aware even google scholar doesnt always present the links to everything on a topic. Just like SEO can manipulate business website ranking, scientific study ranking can also be manipulated! |