Table 1: Excluded studies with reasons.

Reference Author, Year Reason for Exclusion
[17] (Benson, et al. 2012) No attempt was made to categorise the sample into obese and non-obese by measuring BMI or body fat
[20] (Eberle, et al. 2010) No attempt was made to categorise the sample into obese and non-obese by measuring BMI or body fat
[21] (Euteneuer, et al. 2011) The study involved patients and control groups. No attempt was made to categorise healthy participants control into obese and non-obese according to BMI or body fat
[22] (Manson, 2010) Discussion article
[23] (Tashani. et al. 2010) All participants were normal BMI (i.e. not obese)
[24] (Price, et al. 2013) Healthy participants received a placebo intervention as part of a randomised controlled clinical trial