Association Between Dietary Phytochemical Index and Neonatal Thyroid Function

Area of Science:

• Endocrinology
• Nutritional Science
• Perinatal Medicine

Background:

• Thyroid hormones are crucial for fetal development and tissue differentiation.
• Maternal nutrition is known to influence birth weight and offspring growth.
• Potential links between maternal dietary patterns and neonatal endocrine status warrant investigation.

Purpose of the Study:

• To assess the association between maternal dietary phytochemical index (DPI) during early pregnancy and neonatal thyroid hormone levels.
• To investigate the relationship between maternal diet quality and cord blood thyroid-stimulating hormone (TSH) and free thyroxine (FT4).

Main Methods:

• Cross-sectional study involving 216 mothers in their first trimester.
• Dietary Phytochemical Index (DPI) calculated based on the ratio of energy from phytochemical-rich foods to total energy intake.
• Neonatal cord blood TSH and FT4 levels measured via chemiluminescence immunoassay at delivery.

Main Results:

• Maternal age averaged 29.56 years; 47% of newborns were female.
• Mean DPI varied across quartiles, indicating a range of dietary quality.
• No statistically significant correlation was found between maternal DPI and cord blood TSH or FT4 levels, even after adjustments.

Conclusions:

• The study found no significant association between maternal dietary phytochemical index in the first trimester and neonatal thyroid hormone levels.
• Current evidence on the impact of maternal diet quality indices on neonatal thyroid function is limited.
• Further research is recommended to elucidate the complex interplay between maternal diet and offspring endocrine health.