Sleep during the early stages of urbanisation

This week, I publised an article entitled Comparison between an African town and a neighbouring village shows delayed, but not decreased, sleep during the early stages of urbanisation in the journal Scientific Reports. The article is Open Access, which means it is freely available for all to read.

I hope the research has contributed to the discussion on artificial light, urban lifestyles and sleep and that other researchers find it useful. But in this post, I want to reflect on the background to the story – how the research came about and what happened when it got some publicity. Continue reading “Sleep during the early stages of urbanisation”

Jet lag – the disadvantage of having a clock in the modern world

Air travel challenges our bodies in a way that has never before been encountered in our evolutionary history. It allows us to move rapidly across multiple timezones, quicker than we could have ever moved by foot or animal. Unfortunately, our bodies are unable to adjust quickly enough. We are constrained by our circadian clocks, the things that give our bodies a sense of internal time, which have evolved to coordinate our physiology to the rhythmic and predictable changes in the external environment (as well as other roles) like day and night. The clock keeps its original time when you move timezones like a watch before you’ve reset it. It’s resistant to rapid change, giving us jet lag. However, unlike a watch, the body clock can gradually reset itself over a period of days so that we become tuned to a new local time. Despite this inbuilt mechanism, in an era of global travel it is often too slow.

Is it possible to speed up the resetting process? Can we travel the world without jetlag?

Continue reading “Jet lag – the disadvantage of having a clock in the modern world”