Co-author of the study Dr Minjee Kim said: “It appears that even a tiny amount of light has a noticeable effect on our body’s response.
“Previous animal and some human studies have suggested a potential association between mistimed light – not enough light during the day, too much light at night – and obesity.”
Sweden’s Dr Jonathan Cedernaes added: “The fact that this is observed in older people may represent the more cumulative effects of such a mechanistic relationship, meaning that the adverse cardiometabolic effects of nighttime light exposure may become more evident over time.”
As with Georgetown University’s study, more research is required before a concrete link can be established.