"Are Metabolically Healthy Overweight and Obesity Benign Conditions?: A Systematic Review and Meta-analysis"
Annals
http://annals.org/article.aspx?articleid=1784291
"Conclusion: Compared with metabolically healthy normal-weight individuals, obese persons are at increased risk for adverse long-term outcomes even in the absence of metabolic abnormalities, suggesting that there is no healthy pattern of increased weight."