Key result
Brown adipose tissue activity was significantly more common in winter (7.2%) compared with summer months (2.5%, P<0.00001), and its occurrence was more closely related to photoperiod than temperature.
Population
3,614 consecutive patients who underwent positron emission tomography followed by computed tomography scans
Design
Cross-sectional
Authors
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Seasonal BAT variation linked to photoperiod warrants controls in metabolic studies; leaves open whether light exposure modulates cardiometabolic risk.
Observational (n=3,614)
Absolute Event Rate: 7.2% vs 2.5%
p-value: p=< 0.00001
Brown adipose tissue activity in humans demonstrates strong seasonal variation that is more closely associated with photoperiod than ambient temperature.
Au‐Yong et al. (2009) conducted an observational in Patients undergoing PET/CT scans (n=3,614). Winter months vs. Summer months was evaluated on Presence of brown adipose tissue (BAT) activity (p=< 0.00001). Brown adipose tissue activity was significantly more common in winter (7.2%) compared with summer months (2.5%, P<0.00001), and its occurrence was more closely related to photoperiod than temperature.
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