Why Does hCG Decrease During the Second Trimester of Pregnancy?
Discover why hCG levels drop in the second trimester and its importance in pregnancy health.
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hCG decreases in the second trimester because its primary role of supporting the corpus luteum, which maintains progesterone production, becomes less critical. By this time, the placenta has fully formed and takes over the production of progesterone and estrogen, eliminating the need for high levels of hCG. This natural dip helps regulate the hormonal balance necessary for the ongoing development of the pregnancy.
FAQs & Answers
- What is the role of hCG in early pregnancy? hCG supports the corpus luteum to maintain progesterone levels, crucial for the early stages of pregnancy.
- How does the placenta contribute to hormone production? Once fully formed, the placenta takes over the production of hormones like progesterone and estrogen, reducing the need for hCG.
- Is a decrease in hCG levels normal? Yes, a decrease in hCG levels during the second trimester is normal and indicates the placenta is functioning appropriately.
- What hormonal changes occur during the second trimester? During the second trimester, hCG levels drop as the placenta increases the production of progesterone and estrogen.