human obesity 191 Humans 188 female 160 male 144 adult 130 Obesity 119 Article 117 Female 117 body mass 100 Male 99 Adult 82 controlled study 78 major clinical study 67 middle aged 64 Body Mass Index 59 risk factor 55 Middle Aged 51 child 50 adolescent 48 Adolescent 45 Child 43 Risk Factors 41 cross-sectional study 41 complication 39 aged 37 cohort analysis 36 Overweight 35 body weight 35 prevalence 34