article female human Female 607 male 575 Humans 573 controlled study 516 adult 514 priority journal 472 Male 437 Adult 338 clinical article 216 aged 215 Middle Aged 213 human cell 183 major clinical study 170 Aged 155 Animals 144 nonhuman 141 Adolescent 137 Argentina 126 adolescent 123 physiology 101 Child 100 metabolism 97 protein expression 97 child 96 mouse 86 Mice 84 human experiment 83