What is recommended or not recommended during pregnancy — be it alcohol, caffeine, or fish — changes with the seasons, but a well-balanced diet is universally acknowledged as having an important role in fertility, pregnancy, and lactation. The new research, which is part of a broader effort to overhaul nutrition guidelines for pregnant women and children under 2 years old (who are not covered in the FDA's current guidelines), examines previous research that suggested that avocados in particular are a "unique nutrition source for pregnant and lactating women and, thus, should be considered for inclusion in future dietary recommendations for expecting and new mothers."