The FSH gene, influencing Follicle-Stimulating Hormone (FSH) levels, is associated with an increased likelihood of having twins.
Understanding FSH and Twins
FSH plays a crucial role in the menstrual cycle and the development of eggs in the ovaries. Here's a breakdown:
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Normal FSH Function: FSH stimulates the growth of follicles in the ovaries, each containing an egg. Typically, one follicle becomes dominant and releases its egg during ovulation.
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FSH and Multiple Eggs: According to the provided reference, fluctuating FSH levels that remain high for extended periods can cause the ovaries to release multiple eggs. This can lead to fraternal twins if two eggs are fertilized. The FSH gene is specifically mentioned in the reference as being associated with the likelihood of a twin birth.
How the FSH Gene Plays a Role
Variations in the FSH gene can affect how much FSH is produced and how the ovaries respond to it. Individuals with specific variations in the FSH gene may:
- Produce more FSH.
- Have ovaries that are more sensitive to FSH.
These factors can increase the chances of multiple eggs being released during ovulation. Therefore, the FSH gene is linked to increased possibilities of fraternal twins.
