2015i-463 adverseeffects aged agefactorsindisease aging bacteria bacterialdiseases bacterialphysiologicalphenomena degeneration(pathology) disease diseases dna endocrinedisruptingchemicals endocrinedisruptors endocrineglands endocrinology environmentalexposure etiology feedingbehavior geneexpressionregulation geneticregulation genetics healthaspects homeostasis hormones host-bacteriarelationships host-pathogeninteractions hunger intestines kk5780 longevity metabolism methods microbiology microbiota neurodevelopmentaldisorders neuroendocrinology neurogenetics neuropeptides neurotoxins neurotransmitter peptidehormones physiologicalaspects physiology physiopathology qr175 receptors recombinant riskassessment satiation stimulussatiation toxicity wa671 wk102m6262014 wl103s9261998 wl105 wt104