Related by context. Frequent words. (Click for all words.) 51 Hertz Picciotto 49 unexplained infertility 48 hunter gatherer societies 47 menarche 47 evolutionary genetics 47 Alving 47 Evolutionary biologists 47 Popenoe 47 artificial fertilization 46 Kiecolt Glaser 46 procreated 45 Ambert 45 oral contraception 45 childlessness 45 shorter telomeres 45 prepubertal 45 donor insemination 45 fertility 44 Sinervo 44 journal Human Reproduction 44 developmental psychology 44 Zagorsky 44 Chavarro 44 evolutionary origins 44 researchers 44 intracytoplasmic sperm injection 44 bmj.com today 44 Developmental Psychology 44 autistic traits 44 Pääbo 44 assisted reproduction 43 Furedi 43 transgenerational 43 low calorie diets 43 studys 43 asexual reproduction 43 pubertal 43 study 43 journal Fertility 43 MacDorman 43 Neumark 43 recurrent miscarriage 43 reproductive biology 43 polycystic ovaries 42 polycystic ovary syndrome 42 longitudinal studies 42 polyandry 42 fertility treatments 42 puberty 42 journal Thorax 42 Von Hippel 42 folate deficiency 42 Herbenick 42 Trichopoulos 42 Arranged marriages 42 von Hippel 42 reproductive hormones 42 premature ovarian 42 Tinetti 42 Ravussin 42 iron supplementation 42 Nayernia 42 Carnethon 41 fruitflies 41 undergoing IVF 41 Umea University 41 nonbiological 41 bmj.com 41 Lyubomirsky 41 Bergholdt 41 infertile 41 reseachers 41 Bibbins Domingo 41 cryptorchidism 41 offspring 41 polygyny 41 polycystic ovarian syndrome 41 Sociobiology 41 Birth Cohort 41 Ordovas 41 Frans de Waal 41 developmental abnormalities 41 Waldfogel 41 ambiguous genitalia 41 Artificial insemination 41 Holt Lunstad 41 irregular menstrual cycles 41 journal Epidemiology 41 Sweden Karolinska Institute 41 assisted reproductive 41 Biology Letters 41 shorter lifespan 41 medicalisation 40 Pillemer 40 thyroid dysfunction 40 premature menopause 40 Wurtman 40 Plantinga 40 difficulty conceiving 40 premenopausal breast cancer 40 vom Saal