Directions: In the following questions a statement of assertion (A) i...
Assertion (A): Lactational amenorrhoea (absence of menstruation) is a temporary contraceptive method.
Reason (R): It is based on the fact that ovulation and therefore the cycle do not occur during the period of intense lactation following parturition.
The correct answer is option 'A': Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).
Explanation:
Lactational Amenorrhoea as a Contraceptive Method:
- Lactational amenorrhoea refers to the temporary absence of menstruation that occurs during the period of intense lactation following childbirth.
- It is considered a temporary contraceptive method because it provides natural contraception during the breastfeeding period.
- During lactation, the hormone prolactin is released, which stimulates the production of breast milk and inhibits the release of follicle-stimulating hormone (FSH) and luteinizing hormone (LH).
- FSH and LH are responsible for the development of ovarian follicles and the release of mature eggs (ovulation).
- Therefore, during lactation, when prolactin levels are high and FSH and LH levels are suppressed, ovulation does not occur, leading to temporary infertility.
Explanation of Reason (R):
- The reason provided in statement (R) correctly explains why lactational amenorrhoea is a temporary contraceptive method.
- The absence of ovulation during the period of intense lactation is the key mechanism behind lactational amenorrhoea as a contraceptive method.
- This is because the release of mature eggs is necessary for the menstrual cycle to occur.
- When ovulation does not occur, the menstrual cycle is disrupted, leading to the temporary absence of menstruation.
Conclusion:
The statement (A) that lactational amenorrhoea is a temporary contraceptive method is true. The reason (R) provided for this assertion, which is the absence of ovulation during intense lactation, is also true and correctly explains why lactational amenorrhoea is an effective contraceptive method. Therefore, the correct answer is option 'A'.
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