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    • Estrogen and Progesterone in Females

      Estrogen and Progesterone in Females

      Verywell Health via Yahoo News· 9 months ago

      And What Imbalanced Levels Could Signal Vladimir Vladimirov / Getty Images Medically reviewed by Do-Eun Lee, MD Estrogen and progesterone are the primary...

    • Why is male fertility declining?

      Why is male fertility declining?

      The Week via Yahoo News· 1 year ago

      Lowering sperm count illustration. filo/Getty Images. Is the world in the midst of a male fertility crisis? Or are we overstating the problem? Here's...

    • Endocrine System Overview

      Endocrine System Overview

      Health via Yahoo News· 4 months ago

      The endocrine system is a complex network of glands and organs known for the production of hormones, which are chemical messengers. The hormones from the...