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'During my time at Halley I carried out some medical research into circadian rhythm disturbance. ‘Willing volunteers’ were roused in the middle of the night in winter and summer and sat in front of a full-spectrum light-box (to replicate sunshine) for an hour, after which urinary melatonin levels were measured which inevitably led to frequent comments about 'the doc taking the piss’! The research did show a change in seasonal light sensitivity and has perhaps contributed a bit to the management and treatment of circadian rhythm disorders including Seasonal Affective Disorder and jet lag'. [2 April 2021]
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