Lactational amenorrhoea prevents

Options

A. Secretion of malk from breast
B. Conception
C. secretin of prolactin
D. Spermatogenesis

Answer

### Step-by-Step Solution:

1. **Understanding Lactational Amenorrhea**:
- Lactational amenorrhea refers to the absence of menstrual periods during breastfeeding. It occurs due to hormonal changes that suppress ovulation.

2. **Identifying the Effects**:
- During intense lactation, the body produces high levels of the hormone prolactin, which is responsible for milk production. This hormone also inhibits the secretion of gonadotropin-releasing hormone (GnRH), leading to reduced levels of luteinizing hormone (LH) and follicle-stimulating hormone (FSH).

3. **Analyzing the Options**:
- **a. Secretion of milk from breast**: This is not prevented; in fact, lactational amenorrhea is associated with milk secretion.
- **b. Conception**: This is the primary effect of lactational amenorrhea, as ovulation does not occur, making conception unlikely.
- **c. Secretion of prolactin**: Prolactin levels are actually increased during lactation, so this is not prevented.
- **d. Spermatogenesis**: This is a process that occurs in males and is unrelated to lactational amenorrhea.

4. **Conclusion**:
- The correct answer is **b. conception**, as lactational amenorrhea prevents ovulation and thus reduces the chances of becoming pregnant during the breastfeeding period.