Reproductive hormones are chemical messengers that regulate various aspects of reproduction in both males and females. These hormones include estrogen, progesterone, testosterone, luteinizing hormone (LH), follicle-stimulating hormone (FSH) and others. They play a crucial role in the development of reproductive organs, regulation of menstrual cycles, ovulation, sperm production, and pregnancy maintenance among other functions. Imbalances or deficiencies in these hormones can lead to various fertility issues or sexual dysfunctions.