Table 1.

Thermogenic fat in humans correlates with physiological and environmental factors and influences metabolic parameters.

	Thermogenic Fat	Sample Size (max)	Age (Range of means)	Sex	References
Age	Negatively correlated	4842	28–62	♀♂	(Au-Yong, et al. 2009; Chen, et al. 2013; Cypess, et al. 2009; Lee, et al. 2010; Orava, et al. 2013; Ouellet, et al. 2011; Pfannenberg, et al. 2010; Saito, et al. 2009; Yoneshiro, et al. 2011b)
BMI	Negatively correlated	4842	24–62	♀♂	(Au-Yong et al. 2009; Cypess et al. 2009; Lee et al. 2010; Matsushita, et al. 2014; Orava et al. 2013; Ouellet et al. 2011; Pfannenberg et al. 2010; Saito et al. 2009; van Marken Lichtenbelt, et al. 2009; Vijgen, et al. 2012; Yoneshiro, et al. 2013; Yoneshiro et al. 2011b)
Cold exposure & environmental temperature	Positively correlated	4842	23–62	♀♂	(Au-Yong et al. 2009; Chen et al. 2013; Cypess, et al. 2012; Cypess et al. 2009; Orava, et al. 2011; Ouellet, et al. 2012; Ouellet et al. 2011; Saito et al. 2009; van Marken Lichtenbelt et al. 2009; Virtanen, et al. 2009; Vosselman, et al. 2012; Yoneshiro, et al. 2011a)
Respiratory Exchange Ratio & Nonshivering Thermogenesis	Increased by activation of thermogenic fat	27	23–40	♀♂	(Orava et al. 2011; van der Lans, et al. 2013; van Marken Lichtenbelt et al. 2009; Vijgen et al. 2012; Yoneshiro et al. 2011a)
Glucose Homeostasis & Insulin Sensitivity	Improved by activation of thermogenic fat	12	21–45	♂	(Chondronikola, et al. 2014; Lee, et al. 2014b)