Related by context. Frequent words. (Click for all words.) 42 fertilized embryos 41 chromosomal abnormalities 41 post menopausal 41 fertility 41 ovulate 41 utero 40 Adult stem cells 40 thyroid function 40 fertility treatments 40 oocyte 39 hormones 39 estrogen 39 thyroid hormone 39 reproductive organs 38 ovary 38 menses 38 ovarian 38 conceive 38 hormonal 38 ejaculate 38 ovaries 38 vitro 38 procreate 38 ovulation 38 pre menopausal 38 ovarian tissue 38 oocytes 38 menstrual cycle 38 Hormone therapy 38 prolactin 37 placentas 37 hormone 37 fetal tissue 37 hormone therapy 37 oral contraceptives 36 embryos 36 infertility 36 progesterone 36 menstruation 36 postmenopausal 36 Embryos 36 donor sperm 36 infertile 36 uterine 36 fertilized eggs 36 androgen 36 prenatal 36 perimenopause 35 invasive procedures 35 libido 35 uterus 35 neurogenesis 35 male infertility 35 embryo 35 childbearing 35 sexual dysfunction 35 vaginal delivery 35 vitro fertilization IVF 35 menopause 35 sperms 35 sperm 35 intercourse 35 pluripotent stem cells 35 estrogen therapy 34 hormonal contraceptives 34 vitro fertilization 34 pregnancy 34 bone density 34 ovaries removed 34 severely obese 34 endometriosis 34 childbearing age 34 Cord blood 34 iPSCs 34 kidney function 34 follicles 34 IVF 34 orgasms 34 amniotic fluid 34 embryos implanted 34 testosterone 34 menopausal 34 pregnancies 33 preterm labor 33 frozen embryos 33 fetuses 33 menstrual cycles 33 reproductive biology 33 procreative 33 Vitamin D deficiency 33 vaginal birth 33 tubal ligation 33 ESCs 33 Infertility 33 infertility treatments 33 prolapse 33 orgasm 33 impregnate 33 birth defects 32 menstrual 32 reproductive