Which of the following factors is most commonly associated with 'baby blues'?

The phenomenon known as 'baby blues' typically occurs in the first few days after childbirth and is characterized by mood swings, anxiety, sadness, and irritability. Rapid hormonal changes are a key factor in this experience. After delivery, a significant drop in hormones such as estrogen and progesterone can lead to emotional fluctuations. These hormonal shifts are natural as a woman's body transitions back to its pre-pregnancy state, and they play a crucial role in the emotional postpartum experience.

Understanding this context is vital for recognizing that while other factors can contribute to a new mother’s emotional state, it is the rapid hormonal changes that are most commonly associated with the 'baby blues.' This condition is generally temporary and resolves within a few days to two weeks after delivery as hormone levels start to stabilize. In contrast, the other options, while they may influence a new mother's emotional well-being, are not commonly recognized factors specifically associated with 'baby blues.'