True or False: Pregnancy can lead to increased sensitivity to odors that trigger nausea and vomiting.

• A. True
• B. False

Answer: (A)

Pregnancy is associated with hormonal changes that can heighten a woman’s sensitivity to various stimuli, including odors. This increased sensitivity to smells is a common symptom experienced during the first trimester, often contributing to nausea and vomiting, a condition referred to as morning sickness. The exact reasons for this heightened sensitivity are not fully understood but are believed to be related to human evolutionary responses. Women may become more sensitive to certain smells as a protective measure against potential dangers, including the avoidance of spoiled or toxic foods. Consequently, many pregnant individuals report that familiar odors can suddenly trigger nausea or vomiting, reinforcing the correctness of the statement.

The experience is subjective, leading some to regard it as a significant aspect of their pregnancy journey. While not every pregnant person will experience the same level of sensitivity, the physiological basis for this phenomenon makes the statement true.