HPG axis Aggression 1 Alzheimer’s disease 1 Behavior 1 Clinical & internal medicine 1 Down’s syndrome 1 FFAR4 1 G protein-coupled receptors 1 GPR120 1 GnRH 1 HPA axis 1 Kiss1 receptor 1 LC-MS/MS 1 Medicine 1 Oxytocin 1 Reproduction 1 aging 1 angiogenesis 1 animal-assisted intervention 1 antioxidant 1 anxiety 1 arterial properties 1 behavioral and psychological symptoms of dementia 1 biomarker 1 cerebral blood flow 1 clinical trials 1 cognition 1 default mode network 1 dementia 1 depression 1